_id
stringlengths 2
7
| title
stringlengths 1
88
| partition
stringclasses 3
values | text
stringlengths 75
19.8k
| language
stringclasses 1
value | meta_information
dict |
|---|---|---|---|---|---|
q279400
|
InteractiveShell.init_user_ns
|
test
|
def init_user_ns(self):
"""Initialize all user-visible namespaces to their minimum defaults.
Certain history lists are also initialized here, as they effectively
act as user namespaces.
Notes
-----
All data structures here are only filled in, they are NOT reset by this
method. If they were not empty before, data will simply be added to
therm.
"""
# This function works in two parts: first we put a few things in
# user_ns, and we sync that contents into user_ns_hidden so that these
# initial variables aren't shown by %who. After the sync, we add the
# rest of what we *do* want the user to see with %who even on a new
# session (probably nothing, so theye really only see their own stuff)
# The user dict must *always* have a __builtin__ reference to the
# Python standard __builtin__ namespace, which must be imported.
# This is so that certain operations in prompt evaluation can be
# reliably executed with builtins. Note that we can NOT use
# __builtins__ (note the 's'), because that can either be a dict or a
# module, and can even mutate at runtime, depending on the context
# (Python makes no guarantees on it). In contrast, __builtin__ is
# always a module object, though it must be explicitly imported.
# For more details:
# http://mail.python.org/pipermail/python-dev/2001-April/014068.html
ns = dict()
# Put 'help' in the user namespace
try:
from site import _Helper
ns['help'] = _Helper()
except ImportError:
warn('help() not available - check site.py')
# make global variables for user access to the histories
ns['_ih'] = self.history_manager.input_hist_parsed
ns['_oh'] = self.history_manager.output_hist
ns['_dh'] = self.history_manager.dir_hist
ns['_sh'] = shadowns
# user aliases to input and output histories. These shouldn't show up
# in %who, as they can have very large reprs.
ns['In'] = self.history_manager.input_hist_parsed
ns['Out'] = self.history_manager.output_hist
# Store myself as the public api!!!
ns['get_ipython'] = self.get_ipython
ns['exit'] = self.exiter
ns['quit'] = self.exiter
# Sync what we've added so far to user_ns_hidden so these aren't seen
# by %who
self.user_ns_hidden.update(ns)
# Anything put into ns now would show up in %who. Think twice before
# putting anything here, as we really want %who to show the user their
# stuff, not our variables.
# Finally, update the real user's namespace
self.user_ns.update(ns)
|
python
|
{
"resource": ""
}
|
q279401
|
InteractiveShell.all_ns_refs
|
test
|
def all_ns_refs(self):
"""Get a list of references to all the namespace dictionaries in which
IPython might store a user-created object.
Note that this does not include the displayhook, which also caches
objects from the output."""
return [self.user_ns, self.user_global_ns,
self._user_main_module.__dict__] + self._main_ns_cache.values()
|
python
|
{
"resource": ""
}
|
q279402
|
InteractiveShell.reset
|
test
|
def reset(self, new_session=True):
"""Clear all internal namespaces, and attempt to release references to
user objects.
If new_session is True, a new history session will be opened.
"""
# Clear histories
self.history_manager.reset(new_session)
# Reset counter used to index all histories
if new_session:
self.execution_count = 1
# Flush cached output items
if self.displayhook.do_full_cache:
self.displayhook.flush()
# The main execution namespaces must be cleared very carefully,
# skipping the deletion of the builtin-related keys, because doing so
# would cause errors in many object's __del__ methods.
if self.user_ns is not self.user_global_ns:
self.user_ns.clear()
ns = self.user_global_ns
drop_keys = set(ns.keys())
drop_keys.discard('__builtin__')
drop_keys.discard('__builtins__')
drop_keys.discard('__name__')
for k in drop_keys:
del ns[k]
self.user_ns_hidden.clear()
# Restore the user namespaces to minimal usability
self.init_user_ns()
# Restore the default and user aliases
self.alias_manager.clear_aliases()
self.alias_manager.init_aliases()
# Flush the private list of module references kept for script
# execution protection
self.clear_main_mod_cache()
# Clear out the namespace from the last %run
self.new_main_mod()
|
python
|
{
"resource": ""
}
|
q279403
|
InteractiveShell.del_var
|
test
|
def del_var(self, varname, by_name=False):
"""Delete a variable from the various namespaces, so that, as
far as possible, we're not keeping any hidden references to it.
Parameters
----------
varname : str
The name of the variable to delete.
by_name : bool
If True, delete variables with the given name in each
namespace. If False (default), find the variable in the user
namespace, and delete references to it.
"""
if varname in ('__builtin__', '__builtins__'):
raise ValueError("Refusing to delete %s" % varname)
ns_refs = self.all_ns_refs
if by_name: # Delete by name
for ns in ns_refs:
try:
del ns[varname]
except KeyError:
pass
else: # Delete by object
try:
obj = self.user_ns[varname]
except KeyError:
raise NameError("name '%s' is not defined" % varname)
# Also check in output history
ns_refs.append(self.history_manager.output_hist)
for ns in ns_refs:
to_delete = [n for n, o in ns.iteritems() if o is obj]
for name in to_delete:
del ns[name]
# displayhook keeps extra references, but not in a dictionary
for name in ('_', '__', '___'):
if getattr(self.displayhook, name) is obj:
setattr(self.displayhook, name, None)
|
python
|
{
"resource": ""
}
|
q279404
|
InteractiveShell.reset_selective
|
test
|
def reset_selective(self, regex=None):
"""Clear selective variables from internal namespaces based on a
specified regular expression.
Parameters
----------
regex : string or compiled pattern, optional
A regular expression pattern that will be used in searching
variable names in the users namespaces.
"""
if regex is not None:
try:
m = re.compile(regex)
except TypeError:
raise TypeError('regex must be a string or compiled pattern')
# Search for keys in each namespace that match the given regex
# If a match is found, delete the key/value pair.
for ns in self.all_ns_refs:
for var in ns:
if m.search(var):
del ns[var]
|
python
|
{
"resource": ""
}
|
q279405
|
InteractiveShell.push
|
test
|
def push(self, variables, interactive=True):
"""Inject a group of variables into the IPython user namespace.
Parameters
----------
variables : dict, str or list/tuple of str
The variables to inject into the user's namespace. If a dict, a
simple update is done. If a str, the string is assumed to have
variable names separated by spaces. A list/tuple of str can also
be used to give the variable names. If just the variable names are
give (list/tuple/str) then the variable values looked up in the
callers frame.
interactive : bool
If True (default), the variables will be listed with the ``who``
magic.
"""
vdict = None
# We need a dict of name/value pairs to do namespace updates.
if isinstance(variables, dict):
vdict = variables
elif isinstance(variables, (basestring, list, tuple)):
if isinstance(variables, basestring):
vlist = variables.split()
else:
vlist = variables
vdict = {}
cf = sys._getframe(1)
for name in vlist:
try:
vdict[name] = eval(name, cf.f_globals, cf.f_locals)
except:
print ('Could not get variable %s from %s' %
(name,cf.f_code.co_name))
else:
raise ValueError('variables must be a dict/str/list/tuple')
# Propagate variables to user namespace
self.user_ns.update(vdict)
# And configure interactive visibility
user_ns_hidden = self.user_ns_hidden
if interactive:
user_ns_hidden.difference_update(vdict)
else:
user_ns_hidden.update(vdict)
|
python
|
{
"resource": ""
}
|
q279406
|
InteractiveShell._ofind
|
test
|
def _ofind(self, oname, namespaces=None):
"""Find an object in the available namespaces.
self._ofind(oname) -> dict with keys: found,obj,ospace,ismagic
Has special code to detect magic functions.
"""
oname = oname.strip()
#print '1- oname: <%r>' % oname # dbg
if not oname.startswith(ESC_MAGIC) and \
not oname.startswith(ESC_MAGIC2) and \
not py3compat.isidentifier(oname, dotted=True):
return dict(found=False)
alias_ns = None
if namespaces is None:
# Namespaces to search in:
# Put them in a list. The order is important so that we
# find things in the same order that Python finds them.
namespaces = [ ('Interactive', self.user_ns),
('Interactive (global)', self.user_global_ns),
('Python builtin', builtin_mod.__dict__),
('Alias', self.alias_manager.alias_table),
]
alias_ns = self.alias_manager.alias_table
# initialize results to 'null'
found = False; obj = None; ospace = None; ds = None;
ismagic = False; isalias = False; parent = None
# We need to special-case 'print', which as of python2.6 registers as a
# function but should only be treated as one if print_function was
# loaded with a future import. In this case, just bail.
if (oname == 'print' and not py3compat.PY3 and not \
(self.compile.compiler_flags & __future__.CO_FUTURE_PRINT_FUNCTION)):
return {'found':found, 'obj':obj, 'namespace':ospace,
'ismagic':ismagic, 'isalias':isalias, 'parent':parent}
# Look for the given name by splitting it in parts. If the head is
# found, then we look for all the remaining parts as members, and only
# declare success if we can find them all.
oname_parts = oname.split('.')
oname_head, oname_rest = oname_parts[0],oname_parts[1:]
for nsname,ns in namespaces:
try:
obj = ns[oname_head]
except KeyError:
continue
else:
#print 'oname_rest:', oname_rest # dbg
for part in oname_rest:
try:
parent = obj
obj = getattr(obj,part)
except:
# Blanket except b/c some badly implemented objects
# allow __getattr__ to raise exceptions other than
# AttributeError, which then crashes IPython.
break
else:
# If we finish the for loop (no break), we got all members
found = True
ospace = nsname
if ns == alias_ns:
isalias = True
break # namespace loop
# Try to see if it's magic
if not found:
obj = None
if oname.startswith(ESC_MAGIC2):
oname = oname.lstrip(ESC_MAGIC2)
obj = self.find_cell_magic(oname)
elif oname.startswith(ESC_MAGIC):
oname = oname.lstrip(ESC_MAGIC)
obj = self.find_line_magic(oname)
else:
# search without prefix, so run? will find %run?
obj = self.find_line_magic(oname)
if obj is None:
obj = self.find_cell_magic(oname)
if obj is not None:
found = True
ospace = 'IPython internal'
ismagic = True
# Last try: special-case some literals like '', [], {}, etc:
if not found and oname_head in ["''",'""','[]','{}','()']:
obj = eval(oname_head)
found = True
ospace = 'Interactive'
return {'found':found, 'obj':obj, 'namespace':ospace,
'ismagic':ismagic, 'isalias':isalias, 'parent':parent}
|
python
|
{
"resource": ""
}
|
q279407
|
InteractiveShell._ofind_property
|
test
|
def _ofind_property(self, oname, info):
"""Second part of object finding, to look for property details."""
if info.found:
# Get the docstring of the class property if it exists.
path = oname.split('.')
root = '.'.join(path[:-1])
if info.parent is not None:
try:
target = getattr(info.parent, '__class__')
# The object belongs to a class instance.
try:
target = getattr(target, path[-1])
# The class defines the object.
if isinstance(target, property):
oname = root + '.__class__.' + path[-1]
info = Struct(self._ofind(oname))
except AttributeError: pass
except AttributeError: pass
# We return either the new info or the unmodified input if the object
# hadn't been found
return info
|
python
|
{
"resource": ""
}
|
q279408
|
InteractiveShell._object_find
|
test
|
def _object_find(self, oname, namespaces=None):
"""Find an object and return a struct with info about it."""
inf = Struct(self._ofind(oname, namespaces))
return Struct(self._ofind_property(oname, inf))
|
python
|
{
"resource": ""
}
|
q279409
|
InteractiveShell._inspect
|
test
|
def _inspect(self, meth, oname, namespaces=None, **kw):
"""Generic interface to the inspector system.
This function is meant to be called by pdef, pdoc & friends."""
info = self._object_find(oname, namespaces)
if info.found:
pmethod = getattr(self.inspector, meth)
formatter = format_screen if info.ismagic else None
if meth == 'pdoc':
pmethod(info.obj, oname, formatter)
elif meth == 'pinfo':
pmethod(info.obj, oname, formatter, info, **kw)
else:
pmethod(info.obj, oname)
else:
print 'Object `%s` not found.' % oname
return 'not found'
|
python
|
{
"resource": ""
}
|
q279410
|
InteractiveShell.init_history
|
test
|
def init_history(self):
"""Sets up the command history, and starts regular autosaves."""
self.history_manager = HistoryManager(shell=self, config=self.config)
self.configurables.append(self.history_manager)
|
python
|
{
"resource": ""
}
|
q279411
|
InteractiveShell.excepthook
|
test
|
def excepthook(self, etype, value, tb):
"""One more defense for GUI apps that call sys.excepthook.
GUI frameworks like wxPython trap exceptions and call
sys.excepthook themselves. I guess this is a feature that
enables them to keep running after exceptions that would
otherwise kill their mainloop. This is a bother for IPython
which excepts to catch all of the program exceptions with a try:
except: statement.
Normally, IPython sets sys.excepthook to a CrashHandler instance, so if
any app directly invokes sys.excepthook, it will look to the user like
IPython crashed. In order to work around this, we can disable the
CrashHandler and replace it with this excepthook instead, which prints a
regular traceback using our InteractiveTB. In this fashion, apps which
call sys.excepthook will generate a regular-looking exception from
IPython, and the CrashHandler will only be triggered by real IPython
crashes.
This hook should be used sparingly, only in places which are not likely
to be true IPython errors.
"""
self.showtraceback((etype,value,tb),tb_offset=0)
|
python
|
{
"resource": ""
}
|
q279412
|
InteractiveShell.showtraceback
|
test
|
def showtraceback(self,exc_tuple = None,filename=None,tb_offset=None,
exception_only=False):
"""Display the exception that just occurred.
If nothing is known about the exception, this is the method which
should be used throughout the code for presenting user tracebacks,
rather than directly invoking the InteractiveTB object.
A specific showsyntaxerror() also exists, but this method can take
care of calling it if needed, so unless you are explicitly catching a
SyntaxError exception, don't try to analyze the stack manually and
simply call this method."""
try:
try:
etype, value, tb = self._get_exc_info(exc_tuple)
except ValueError:
self.write_err('No traceback available to show.\n')
return
if etype is SyntaxError:
# Though this won't be called by syntax errors in the input
# line, there may be SyntaxError cases with imported code.
self.showsyntaxerror(filename)
elif etype is UsageError:
self.write_err("UsageError: %s" % value)
else:
if exception_only:
stb = ['An exception has occurred, use %tb to see '
'the full traceback.\n']
stb.extend(self.InteractiveTB.get_exception_only(etype,
value))
else:
try:
# Exception classes can customise their traceback - we
# use this in IPython.parallel for exceptions occurring
# in the engines. This should return a list of strings.
stb = value._render_traceback_()
except Exception:
stb = self.InteractiveTB.structured_traceback(etype,
value, tb, tb_offset=tb_offset)
self._showtraceback(etype, value, stb)
if self.call_pdb:
# drop into debugger
self.debugger(force=True)
return
# Actually show the traceback
self._showtraceback(etype, value, stb)
except KeyboardInterrupt:
self.write_err("\nKeyboardInterrupt\n")
|
python
|
{
"resource": ""
}
|
q279413
|
InteractiveShell._showtraceback
|
test
|
def _showtraceback(self, etype, evalue, stb):
"""Actually show a traceback.
Subclasses may override this method to put the traceback on a different
place, like a side channel.
"""
print >> io.stdout, self.InteractiveTB.stb2text(stb)
|
python
|
{
"resource": ""
}
|
q279414
|
InteractiveShell.showsyntaxerror
|
test
|
def showsyntaxerror(self, filename=None):
"""Display the syntax error that just occurred.
This doesn't display a stack trace because there isn't one.
If a filename is given, it is stuffed in the exception instead
of what was there before (because Python's parser always uses
"<string>" when reading from a string).
"""
etype, value, last_traceback = self._get_exc_info()
if filename and etype is SyntaxError:
try:
value.filename = filename
except:
# Not the format we expect; leave it alone
pass
stb = self.SyntaxTB.structured_traceback(etype, value, [])
self._showtraceback(etype, value, stb)
|
python
|
{
"resource": ""
}
|
q279415
|
InteractiveShell.pre_readline
|
test
|
def pre_readline(self):
"""readline hook to be used at the start of each line.
Currently it handles auto-indent only."""
if self.rl_do_indent:
self.readline.insert_text(self._indent_current_str())
if self.rl_next_input is not None:
self.readline.insert_text(self.rl_next_input)
self.rl_next_input = None
|
python
|
{
"resource": ""
}
|
q279416
|
InteractiveShell.complete
|
test
|
def complete(self, text, line=None, cursor_pos=None):
"""Return the completed text and a list of completions.
Parameters
----------
text : string
A string of text to be completed on. It can be given as empty and
instead a line/position pair are given. In this case, the
completer itself will split the line like readline does.
line : string, optional
The complete line that text is part of.
cursor_pos : int, optional
The position of the cursor on the input line.
Returns
-------
text : string
The actual text that was completed.
matches : list
A sorted list with all possible completions.
The optional arguments allow the completion to take more context into
account, and are part of the low-level completion API.
This is a wrapper around the completion mechanism, similar to what
readline does at the command line when the TAB key is hit. By
exposing it as a method, it can be used by other non-readline
environments (such as GUIs) for text completion.
Simple usage example:
In [1]: x = 'hello'
In [2]: _ip.complete('x.l')
Out[2]: ('x.l', ['x.ljust', 'x.lower', 'x.lstrip'])
"""
# Inject names into __builtin__ so we can complete on the added names.
with self.builtin_trap:
return self.Completer.complete(text, line, cursor_pos)
|
python
|
{
"resource": ""
}
|
q279417
|
InteractiveShell.set_custom_completer
|
test
|
def set_custom_completer(self, completer, pos=0):
"""Adds a new custom completer function.
The position argument (defaults to 0) is the index in the completers
list where you want the completer to be inserted."""
newcomp = types.MethodType(completer,self.Completer)
self.Completer.matchers.insert(pos,newcomp)
|
python
|
{
"resource": ""
}
|
q279418
|
InteractiveShell.set_completer_frame
|
test
|
def set_completer_frame(self, frame=None):
"""Set the frame of the completer."""
if frame:
self.Completer.namespace = frame.f_locals
self.Completer.global_namespace = frame.f_globals
else:
self.Completer.namespace = self.user_ns
self.Completer.global_namespace = self.user_global_ns
|
python
|
{
"resource": ""
}
|
q279419
|
InteractiveShell.run_line_magic
|
test
|
def run_line_magic(self, magic_name, line):
"""Execute the given line magic.
Parameters
----------
magic_name : str
Name of the desired magic function, without '%' prefix.
line : str
The rest of the input line as a single string.
"""
fn = self.find_line_magic(magic_name)
if fn is None:
cm = self.find_cell_magic(magic_name)
etpl = "Line magic function `%%%s` not found%s."
extra = '' if cm is None else (' (But cell magic `%%%%%s` exists, '
'did you mean that instead?)' % magic_name )
error(etpl % (magic_name, extra))
else:
# Note: this is the distance in the stack to the user's frame.
# This will need to be updated if the internal calling logic gets
# refactored, or else we'll be expanding the wrong variables.
stack_depth = 2
magic_arg_s = self.var_expand(line, stack_depth)
# Put magic args in a list so we can call with f(*a) syntax
args = [magic_arg_s]
# Grab local namespace if we need it:
if getattr(fn, "needs_local_scope", False):
args.append(sys._getframe(stack_depth).f_locals)
with self.builtin_trap:
result = fn(*args)
return result
|
python
|
{
"resource": ""
}
|
q279420
|
InteractiveShell.find_magic
|
test
|
def find_magic(self, magic_name, magic_kind='line'):
"""Find and return a magic of the given type by name.
Returns None if the magic isn't found."""
return self.magics_manager.magics[magic_kind].get(magic_name)
|
python
|
{
"resource": ""
}
|
q279421
|
InteractiveShell.define_macro
|
test
|
def define_macro(self, name, themacro):
"""Define a new macro
Parameters
----------
name : str
The name of the macro.
themacro : str or Macro
The action to do upon invoking the macro. If a string, a new
Macro object is created by passing the string to it.
"""
from IPython.core import macro
if isinstance(themacro, basestring):
themacro = macro.Macro(themacro)
if not isinstance(themacro, macro.Macro):
raise ValueError('A macro must be a string or a Macro instance.')
self.user_ns[name] = themacro
|
python
|
{
"resource": ""
}
|
q279422
|
InteractiveShell.system_raw
|
test
|
def system_raw(self, cmd):
"""Call the given cmd in a subprocess using os.system
Parameters
----------
cmd : str
Command to execute.
"""
cmd = self.var_expand(cmd, depth=1)
# protect os.system from UNC paths on Windows, which it can't handle:
if sys.platform == 'win32':
from IPython.utils._process_win32 import AvoidUNCPath
with AvoidUNCPath() as path:
if path is not None:
cmd = '"pushd %s &&"%s' % (path, cmd)
cmd = py3compat.unicode_to_str(cmd)
ec = os.system(cmd)
else:
cmd = py3compat.unicode_to_str(cmd)
ec = os.system(cmd)
# We explicitly do NOT return the subprocess status code, because
# a non-None value would trigger :func:`sys.displayhook` calls.
# Instead, we store the exit_code in user_ns.
self.user_ns['_exit_code'] = ec
|
python
|
{
"resource": ""
}
|
q279423
|
InteractiveShell.auto_rewrite_input
|
test
|
def auto_rewrite_input(self, cmd):
"""Print to the screen the rewritten form of the user's command.
This shows visual feedback by rewriting input lines that cause
automatic calling to kick in, like::
/f x
into::
------> f(x)
after the user's input prompt. This helps the user understand that the
input line was transformed automatically by IPython.
"""
if not self.show_rewritten_input:
return
rw = self.prompt_manager.render('rewrite') + cmd
try:
# plain ascii works better w/ pyreadline, on some machines, so
# we use it and only print uncolored rewrite if we have unicode
rw = str(rw)
print >> io.stdout, rw
except UnicodeEncodeError:
print "------> " + cmd
|
python
|
{
"resource": ""
}
|
q279424
|
InteractiveShell.user_variables
|
test
|
def user_variables(self, names):
"""Get a list of variable names from the user's namespace.
Parameters
----------
names : list of strings
A list of names of variables to be read from the user namespace.
Returns
-------
A dict, keyed by the input names and with the repr() of each value.
"""
out = {}
user_ns = self.user_ns
for varname in names:
try:
value = repr(user_ns[varname])
except:
value = self._simple_error()
out[varname] = value
return out
|
python
|
{
"resource": ""
}
|
q279425
|
InteractiveShell.user_expressions
|
test
|
def user_expressions(self, expressions):
"""Evaluate a dict of expressions in the user's namespace.
Parameters
----------
expressions : dict
A dict with string keys and string values. The expression values
should be valid Python expressions, each of which will be evaluated
in the user namespace.
Returns
-------
A dict, keyed like the input expressions dict, with the repr() of each
value.
"""
out = {}
user_ns = self.user_ns
global_ns = self.user_global_ns
for key, expr in expressions.iteritems():
try:
value = repr(eval(expr, global_ns, user_ns))
except:
value = self._simple_error()
out[key] = value
return out
|
python
|
{
"resource": ""
}
|
q279426
|
InteractiveShell.ev
|
test
|
def ev(self, expr):
"""Evaluate python expression expr in user namespace.
Returns the result of evaluation
"""
with self.builtin_trap:
return eval(expr, self.user_global_ns, self.user_ns)
|
python
|
{
"resource": ""
}
|
q279427
|
InteractiveShell.safe_execfile_ipy
|
test
|
def safe_execfile_ipy(self, fname):
"""Like safe_execfile, but for .ipy files with IPython syntax.
Parameters
----------
fname : str
The name of the file to execute. The filename must have a
.ipy extension.
"""
fname = os.path.abspath(os.path.expanduser(fname))
# Make sure we can open the file
try:
with open(fname) as thefile:
pass
except:
warn('Could not open file <%s> for safe execution.' % fname)
return
# Find things also in current directory. This is needed to mimic the
# behavior of running a script from the system command line, where
# Python inserts the script's directory into sys.path
dname = os.path.dirname(fname)
with prepended_to_syspath(dname):
try:
with open(fname) as thefile:
# self.run_cell currently captures all exceptions
# raised in user code. It would be nice if there were
# versions of runlines, execfile that did raise, so
# we could catch the errors.
self.run_cell(thefile.read(), store_history=False)
except:
self.showtraceback()
warn('Unknown failure executing file: <%s>' % fname)
|
python
|
{
"resource": ""
}
|
q279428
|
InteractiveShell._run_cached_cell_magic
|
test
|
def _run_cached_cell_magic(self, magic_name, line):
"""Special method to call a cell magic with the data stored in self.
"""
cell = self._current_cell_magic_body
self._current_cell_magic_body = None
return self.run_cell_magic(magic_name, line, cell)
|
python
|
{
"resource": ""
}
|
q279429
|
InteractiveShell.run_cell
|
test
|
def run_cell(self, raw_cell, store_history=False, silent=False):
"""Run a complete IPython cell.
Parameters
----------
raw_cell : str
The code (including IPython code such as %magic functions) to run.
store_history : bool
If True, the raw and translated cell will be stored in IPython's
history. For user code calling back into IPython's machinery, this
should be set to False.
silent : bool
If True, avoid side-effets, such as implicit displayhooks, history,
and logging. silent=True forces store_history=False.
"""
if (not raw_cell) or raw_cell.isspace():
return
if silent:
store_history = False
self.input_splitter.push(raw_cell)
# Check for cell magics, which leave state behind. This interface is
# ugly, we need to do something cleaner later... Now the logic is
# simply that the input_splitter remembers if there was a cell magic,
# and in that case we grab the cell body.
if self.input_splitter.cell_magic_parts:
self._current_cell_magic_body = \
''.join(self.input_splitter.cell_magic_parts)
cell = self.input_splitter.source_reset()
with self.builtin_trap:
prefilter_failed = False
if len(cell.splitlines()) == 1:
try:
# use prefilter_lines to handle trailing newlines
# restore trailing newline for ast.parse
cell = self.prefilter_manager.prefilter_lines(cell) + '\n'
except AliasError as e:
error(e)
prefilter_failed = True
except Exception:
# don't allow prefilter errors to crash IPython
self.showtraceback()
prefilter_failed = True
# Store raw and processed history
if store_history:
self.history_manager.store_inputs(self.execution_count,
cell, raw_cell)
if not silent:
self.logger.log(cell, raw_cell)
if not prefilter_failed:
# don't run if prefilter failed
cell_name = self.compile.cache(cell, self.execution_count)
with self.display_trap:
try:
code_ast = self.compile.ast_parse(cell,
filename=cell_name)
except IndentationError:
self.showindentationerror()
if store_history:
self.execution_count += 1
return None
except (OverflowError, SyntaxError, ValueError, TypeError,
MemoryError):
self.showsyntaxerror()
if store_history:
self.execution_count += 1
return None
interactivity = "none" if silent else self.ast_node_interactivity
self.run_ast_nodes(code_ast.body, cell_name,
interactivity=interactivity)
# Execute any registered post-execution functions.
# unless we are silent
post_exec = [] if silent else self._post_execute.iteritems()
for func, status in post_exec:
if self.disable_failing_post_execute and not status:
continue
try:
func()
except KeyboardInterrupt:
print >> io.stderr, "\nKeyboardInterrupt"
except Exception:
# register as failing:
self._post_execute[func] = False
self.showtraceback()
print >> io.stderr, '\n'.join([
"post-execution function %r produced an error." % func,
"If this problem persists, you can disable failing post-exec functions with:",
"",
" get_ipython().disable_failing_post_execute = True"
])
if store_history:
# Write output to the database. Does nothing unless
# history output logging is enabled.
self.history_manager.store_output(self.execution_count)
# Each cell is a *single* input, regardless of how many lines it has
self.execution_count += 1
|
python
|
{
"resource": ""
}
|
q279430
|
InteractiveShell.run_ast_nodes
|
test
|
def run_ast_nodes(self, nodelist, cell_name, interactivity='last_expr'):
"""Run a sequence of AST nodes. The execution mode depends on the
interactivity parameter.
Parameters
----------
nodelist : list
A sequence of AST nodes to run.
cell_name : str
Will be passed to the compiler as the filename of the cell. Typically
the value returned by ip.compile.cache(cell).
interactivity : str
'all', 'last', 'last_expr' or 'none', specifying which nodes should be
run interactively (displaying output from expressions). 'last_expr'
will run the last node interactively only if it is an expression (i.e.
expressions in loops or other blocks are not displayed. Other values
for this parameter will raise a ValueError.
"""
if not nodelist:
return
if interactivity == 'last_expr':
if isinstance(nodelist[-1], ast.Expr):
interactivity = "last"
else:
interactivity = "none"
if interactivity == 'none':
to_run_exec, to_run_interactive = nodelist, []
elif interactivity == 'last':
to_run_exec, to_run_interactive = nodelist[:-1], nodelist[-1:]
elif interactivity == 'all':
to_run_exec, to_run_interactive = [], nodelist
else:
raise ValueError("Interactivity was %r" % interactivity)
exec_count = self.execution_count
try:
for i, node in enumerate(to_run_exec):
mod = ast.Module([node])
code = self.compile(mod, cell_name, "exec")
if self.run_code(code):
return True
for i, node in enumerate(to_run_interactive):
mod = ast.Interactive([node])
code = self.compile(mod, cell_name, "single")
if self.run_code(code):
return True
# Flush softspace
if softspace(sys.stdout, 0):
print
except:
# It's possible to have exceptions raised here, typically by
# compilation of odd code (such as a naked 'return' outside a
# function) that did parse but isn't valid. Typically the exception
# is a SyntaxError, but it's safest just to catch anything and show
# the user a traceback.
# We do only one try/except outside the loop to minimize the impact
# on runtime, and also because if any node in the node list is
# broken, we should stop execution completely.
self.showtraceback()
return False
|
python
|
{
"resource": ""
}
|
q279431
|
InteractiveShell.enable_pylab
|
test
|
def enable_pylab(self, gui=None, import_all=True):
"""Activate pylab support at runtime.
This turns on support for matplotlib, preloads into the interactive
namespace all of numpy and pylab, and configures IPython to correctly
interact with the GUI event loop. The GUI backend to be used can be
optionally selected with the optional :param:`gui` argument.
Parameters
----------
gui : optional, string
If given, dictates the choice of matplotlib GUI backend to use
(should be one of IPython's supported backends, 'qt', 'osx', 'tk',
'gtk', 'wx' or 'inline'), otherwise we use the default chosen by
matplotlib (as dictated by the matplotlib build-time options plus the
user's matplotlibrc configuration file). Note that not all backends
make sense in all contexts, for example a terminal ipython can't
display figures inline.
"""
from IPython.core.pylabtools import mpl_runner
# We want to prevent the loading of pylab to pollute the user's
# namespace as shown by the %who* magics, so we execute the activation
# code in an empty namespace, and we update *both* user_ns and
# user_ns_hidden with this information.
ns = {}
try:
gui = pylab_activate(ns, gui, import_all, self)
except KeyError:
error("Backend %r not supported" % gui)
return
self.user_ns.update(ns)
self.user_ns_hidden.update(ns)
# Now we must activate the gui pylab wants to use, and fix %run to take
# plot updates into account
self.enable_gui(gui)
self.magics_manager.registry['ExecutionMagics'].default_runner = \
mpl_runner(self.safe_execfile)
|
python
|
{
"resource": ""
}
|
q279432
|
InteractiveShell.var_expand
|
test
|
def var_expand(self, cmd, depth=0, formatter=DollarFormatter()):
"""Expand python variables in a string.
The depth argument indicates how many frames above the caller should
be walked to look for the local namespace where to expand variables.
The global namespace for expansion is always the user's interactive
namespace.
"""
ns = self.user_ns.copy()
ns.update(sys._getframe(depth+1).f_locals)
ns.pop('self', None)
try:
cmd = formatter.format(cmd, **ns)
except Exception:
# if formatter couldn't format, just let it go untransformed
pass
return cmd
|
python
|
{
"resource": ""
}
|
q279433
|
InteractiveShell.mktempfile
|
test
|
def mktempfile(self, data=None, prefix='ipython_edit_'):
"""Make a new tempfile and return its filename.
This makes a call to tempfile.mktemp, but it registers the created
filename internally so ipython cleans it up at exit time.
Optional inputs:
- data(None): if data is given, it gets written out to the temp file
immediately, and the file is closed again."""
filename = tempfile.mktemp('.py', prefix)
self.tempfiles.append(filename)
if data:
tmp_file = open(filename,'w')
tmp_file.write(data)
tmp_file.close()
return filename
|
python
|
{
"resource": ""
}
|
q279434
|
InteractiveShell.extract_input_lines
|
test
|
def extract_input_lines(self, range_str, raw=False):
"""Return as a string a set of input history slices.
Parameters
----------
range_str : string
The set of slices is given as a string, like "~5/6-~4/2 4:8 9",
since this function is for use by magic functions which get their
arguments as strings. The number before the / is the session
number: ~n goes n back from the current session.
Optional Parameters:
- raw(False): by default, the processed input is used. If this is
true, the raw input history is used instead.
Note that slices can be called with two notations:
N:M -> standard python form, means including items N...(M-1).
N-M -> include items N..M (closed endpoint)."""
lines = self.history_manager.get_range_by_str(range_str, raw=raw)
return "\n".join(x for _, _, x in lines)
|
python
|
{
"resource": ""
}
|
q279435
|
InteractiveShell.find_user_code
|
test
|
def find_user_code(self, target, raw=True, py_only=False):
"""Get a code string from history, file, url, or a string or macro.
This is mainly used by magic functions.
Parameters
----------
target : str
A string specifying code to retrieve. This will be tried respectively
as: ranges of input history (see %history for syntax), url,
correspnding .py file, filename, or an expression evaluating to a
string or Macro in the user namespace.
raw : bool
If true (default), retrieve raw history. Has no effect on the other
retrieval mechanisms.
py_only : bool (default False)
Only try to fetch python code, do not try alternative methods to decode file
if unicode fails.
Returns
-------
A string of code.
ValueError is raised if nothing is found, and TypeError if it evaluates
to an object of another type. In each case, .args[0] is a printable
message.
"""
code = self.extract_input_lines(target, raw=raw) # Grab history
if code:
return code
utarget = unquote_filename(target)
try:
if utarget.startswith(('http://', 'https://')):
return openpy.read_py_url(utarget, skip_encoding_cookie=True)
except UnicodeDecodeError:
if not py_only :
response = urllib.urlopen(target)
return response.read().decode('latin1')
raise ValueError(("'%s' seem to be unreadable.") % utarget)
potential_target = [target]
try :
potential_target.insert(0,get_py_filename(target))
except IOError:
pass
for tgt in potential_target :
if os.path.isfile(tgt): # Read file
try :
return openpy.read_py_file(tgt, skip_encoding_cookie=True)
except UnicodeDecodeError :
if not py_only :
with io_open(tgt,'r', encoding='latin1') as f :
return f.read()
raise ValueError(("'%s' seem to be unreadable.") % target)
try: # User namespace
codeobj = eval(target, self.user_ns)
except Exception:
raise ValueError(("'%s' was not found in history, as a file, url, "
"nor in the user namespace.") % target)
if isinstance(codeobj, basestring):
return codeobj
elif isinstance(codeobj, Macro):
return codeobj.value
raise TypeError("%s is neither a string nor a macro." % target,
codeobj)
|
python
|
{
"resource": ""
}
|
q279436
|
InteractiveShell.atexit_operations
|
test
|
def atexit_operations(self):
"""This will be executed at the time of exit.
Cleanup operations and saving of persistent data that is done
unconditionally by IPython should be performed here.
For things that may depend on startup flags or platform specifics (such
as having readline or not), register a separate atexit function in the
code that has the appropriate information, rather than trying to
clutter
"""
# Close the history session (this stores the end time and line count)
# this must be *before* the tempfile cleanup, in case of temporary
# history db
self.history_manager.end_session()
# Cleanup all tempfiles left around
for tfile in self.tempfiles:
try:
os.unlink(tfile)
except OSError:
pass
# Clear all user namespaces to release all references cleanly.
self.reset(new_session=False)
# Run user hooks
self.hooks.shutdown_hook()
|
python
|
{
"resource": ""
}
|
q279437
|
broadcast
|
test
|
def broadcast(client, sender, msg_name, dest_name=None, block=None):
"""broadcast a message from one engine to all others."""
dest_name = msg_name if dest_name is None else dest_name
client[sender].execute('com.publish(%s)'%msg_name, block=None)
targets = client.ids
targets.remove(sender)
return client[targets].execute('%s=com.consume()'%dest_name, block=None)
|
python
|
{
"resource": ""
}
|
q279438
|
send
|
test
|
def send(client, sender, targets, msg_name, dest_name=None, block=None):
"""send a message from one to one-or-more engines."""
dest_name = msg_name if dest_name is None else dest_name
def _send(targets, m_name):
msg = globals()[m_name]
return com.send(targets, msg)
client[sender].apply_async(_send, targets, msg_name)
return client[targets].execute('%s=com.recv()'%dest_name, block=None)
|
python
|
{
"resource": ""
}
|
q279439
|
skipif
|
test
|
def skipif(skip_condition, msg=None):
"""
Make function raise SkipTest exception if a given condition is true.
If the condition is a callable, it is used at runtime to dynamically
make the decision. This is useful for tests that may require costly
imports, to delay the cost until the test suite is actually executed.
Parameters
----------
skip_condition : bool or callable
Flag to determine whether to skip the decorated test.
msg : str, optional
Message to give on raising a SkipTest exception. Default is None.
Returns
-------
decorator : function
Decorator which, when applied to a function, causes SkipTest
to be raised when `skip_condition` is True, and the function
to be called normally otherwise.
Notes
-----
The decorator itself is decorated with the ``nose.tools.make_decorator``
function in order to transmit function name, and various other metadata.
"""
def skip_decorator(f):
# Local import to avoid a hard nose dependency and only incur the
# import time overhead at actual test-time.
import nose
# Allow for both boolean or callable skip conditions.
if callable(skip_condition):
skip_val = lambda : skip_condition()
else:
skip_val = lambda : skip_condition
def get_msg(func,msg=None):
"""Skip message with information about function being skipped."""
if msg is None:
out = 'Test skipped due to test condition'
else:
out = '\n'+msg
return "Skipping test: %s%s" % (func.__name__,out)
# We need to define *two* skippers because Python doesn't allow both
# return with value and yield inside the same function.
def skipper_func(*args, **kwargs):
"""Skipper for normal test functions."""
if skip_val():
raise nose.SkipTest(get_msg(f,msg))
else:
return f(*args, **kwargs)
def skipper_gen(*args, **kwargs):
"""Skipper for test generators."""
if skip_val():
raise nose.SkipTest(get_msg(f,msg))
else:
for x in f(*args, **kwargs):
yield x
# Choose the right skipper to use when building the actual decorator.
if nose.util.isgenerator(f):
skipper = skipper_gen
else:
skipper = skipper_func
return nose.tools.make_decorator(f)(skipper)
return skip_decorator
|
python
|
{
"resource": ""
}
|
q279440
|
knownfailureif
|
test
|
def knownfailureif(fail_condition, msg=None):
"""
Make function raise KnownFailureTest exception if given condition is true.
If the condition is a callable, it is used at runtime to dynamically
make the decision. This is useful for tests that may require costly
imports, to delay the cost until the test suite is actually executed.
Parameters
----------
fail_condition : bool or callable
Flag to determine whether to mark the decorated test as a known
failure (if True) or not (if False).
msg : str, optional
Message to give on raising a KnownFailureTest exception.
Default is None.
Returns
-------
decorator : function
Decorator, which, when applied to a function, causes SkipTest
to be raised when `skip_condition` is True, and the function
to be called normally otherwise.
Notes
-----
The decorator itself is decorated with the ``nose.tools.make_decorator``
function in order to transmit function name, and various other metadata.
"""
if msg is None:
msg = 'Test skipped due to known failure'
# Allow for both boolean or callable known failure conditions.
if callable(fail_condition):
fail_val = lambda : fail_condition()
else:
fail_val = lambda : fail_condition
def knownfail_decorator(f):
# Local import to avoid a hard nose dependency and only incur the
# import time overhead at actual test-time.
import nose
def knownfailer(*args, **kwargs):
if fail_val():
raise KnownFailureTest, msg
else:
return f(*args, **kwargs)
return nose.tools.make_decorator(f)(knownfailer)
return knownfail_decorator
|
python
|
{
"resource": ""
}
|
q279441
|
deprecated
|
test
|
def deprecated(conditional=True):
"""
Filter deprecation warnings while running the test suite.
This decorator can be used to filter DeprecationWarning's, to avoid
printing them during the test suite run, while checking that the test
actually raises a DeprecationWarning.
Parameters
----------
conditional : bool or callable, optional
Flag to determine whether to mark test as deprecated or not. If the
condition is a callable, it is used at runtime to dynamically make the
decision. Default is True.
Returns
-------
decorator : function
The `deprecated` decorator itself.
Notes
-----
.. versionadded:: 1.4.0
"""
def deprecate_decorator(f):
# Local import to avoid a hard nose dependency and only incur the
# import time overhead at actual test-time.
import nose
def _deprecated_imp(*args, **kwargs):
# Poor man's replacement for the with statement
ctx = WarningManager(record=True)
l = ctx.__enter__()
warnings.simplefilter('always')
try:
f(*args, **kwargs)
if not len(l) > 0:
raise AssertionError("No warning raised when calling %s"
% f.__name__)
if not l[0].category is DeprecationWarning:
raise AssertionError("First warning for %s is not a " \
"DeprecationWarning( is %s)" % (f.__name__, l[0]))
finally:
ctx.__exit__()
if callable(conditional):
cond = conditional()
else:
cond = conditional
if cond:
return nose.tools.make_decorator(f)(_deprecated_imp)
else:
return f
return deprecate_decorator
|
python
|
{
"resource": ""
}
|
q279442
|
list_profiles_in
|
test
|
def list_profiles_in(path):
"""list profiles in a given root directory"""
files = os.listdir(path)
profiles = []
for f in files:
full_path = os.path.join(path, f)
if os.path.isdir(full_path) and f.startswith('profile_'):
profiles.append(f.split('_',1)[-1])
return profiles
|
python
|
{
"resource": ""
}
|
q279443
|
list_bundled_profiles
|
test
|
def list_bundled_profiles():
"""list profiles that are bundled with IPython."""
path = os.path.join(get_ipython_package_dir(), u'config', u'profile')
files = os.listdir(path)
profiles = []
for profile in files:
full_path = os.path.join(path, profile)
if os.path.isdir(full_path) and profile != "__pycache__":
profiles.append(profile)
return profiles
|
python
|
{
"resource": ""
}
|
q279444
|
WorkingSet.find
|
test
|
def find(self, req):
"""Find a distribution matching requirement `req`
If there is an active distribution for the requested project, this
returns it as long as it meets the version requirement specified by
`req`. But, if there is an active distribution for the project and it
does *not* meet the `req` requirement, ``VersionConflict`` is raised.
If there is no active distribution for the requested project, ``None``
is returned.
"""
dist = self.by_key.get(req.key)
if dist is not None and dist not in req:
# XXX add more info
raise VersionConflict(dist, req)
else:
return dist
|
python
|
{
"resource": ""
}
|
q279445
|
run
|
test
|
def run (command, timeout=-1, withexitstatus=False, events=None, extra_args=None,
logfile=None, cwd=None, env=None, encoding='utf-8'):
"""
This function runs the given command; waits for it to finish; then
returns all output as a string. STDERR is included in output. If the full
path to the command is not given then the path is searched.
Note that lines are terminated by CR/LF (\\r\\n) combination even on
UNIX-like systems because this is the standard for pseudo ttys. If you set
'withexitstatus' to true, then run will return a tuple of (command_output,
exitstatus). If 'withexitstatus' is false then this returns just
command_output.
The run() function can often be used instead of creating a spawn instance.
For example, the following code uses spawn::
from pexpect import *
child = spawn('scp foo [email protected]:.')
child.expect ('(?i)password')
child.sendline (mypassword)
The previous code can be replace with the following::
from pexpect import *
run ('scp foo [email protected]:.', events={'(?i)password': mypassword})
Examples
========
Start the apache daemon on the local machine::
from pexpect import *
run ("/usr/local/apache/bin/apachectl start")
Check in a file using SVN::
from pexpect import *
run ("svn ci -m 'automatic commit' my_file.py")
Run a command and capture exit status::
from pexpect import *
(command_output, exitstatus) = run ('ls -l /bin', withexitstatus=1)
Tricky Examples
===============
The following will run SSH and execute 'ls -l' on the remote machine. The
password 'secret' will be sent if the '(?i)password' pattern is ever seen::
run ("ssh [email protected] 'ls -l'", events={'(?i)password':'secret\\n'})
This will start mencoder to rip a video from DVD. This will also display
progress ticks every 5 seconds as it runs. For example::
from pexpect import *
def print_ticks(d):
print d['event_count'],
run ("mencoder dvd://1 -o video.avi -oac copy -ovc copy", events={TIMEOUT:print_ticks}, timeout=5)
The 'events' argument should be a dictionary of patterns and responses.
Whenever one of the patterns is seen in the command out run() will send the
associated response string. Note that you should put newlines in your
string if Enter is necessary. The responses may also contain callback
functions. Any callback is function that takes a dictionary as an argument.
The dictionary contains all the locals from the run() function, so you can
access the child spawn object or any other variable defined in run()
(event_count, child, and extra_args are the most useful). A callback may
return True to stop the current run process otherwise run() continues until
the next event. A callback may also return a string which will be sent to
the child. 'extra_args' is not used by directly run(). It provides a way to
pass data to a callback function through run() through the locals
dictionary passed to a callback."""
if timeout == -1:
child = spawn(command, maxread=2000, logfile=logfile, cwd=cwd, env=env,
encoding=encoding)
else:
child = spawn(command, timeout=timeout, maxread=2000, logfile=logfile,
cwd=cwd, env=env, encoding=encoding)
if events is not None:
patterns = events.keys()
responses = events.values()
else:
patterns=None # We assume that EOF or TIMEOUT will save us.
responses=None
child_result_list = []
event_count = 0
while 1:
try:
index = child.expect (patterns)
if isinstance(child.after, basestring):
child_result_list.append(child.before + child.after)
else: # child.after may have been a TIMEOUT or EOF, so don't cat those.
child_result_list.append(child.before)
if isinstance(responses[index], basestring):
child.send(responses[index])
elif type(responses[index]) is types.FunctionType:
callback_result = responses[index](locals())
sys.stdout.flush()
if isinstance(callback_result, basestring):
child.send(callback_result)
elif callback_result:
break
else:
raise TypeError ('The callback must be a string or function type.')
event_count = event_count + 1
except TIMEOUT, e:
child_result_list.append(child.before)
break
except EOF, e:
child_result_list.append(child.before)
break
child_result = child._empty_buffer.join(child_result_list)
if withexitstatus:
child.close()
return (child_result, child.exitstatus)
else:
return child_result
|
python
|
{
"resource": ""
}
|
q279446
|
which
|
test
|
def which (filename):
"""This takes a given filename; tries to find it in the environment path;
then checks if it is executable. This returns the full path to the filename
if found and executable. Otherwise this returns None."""
# Special case where filename already contains a path.
if os.path.dirname(filename) != '':
if os.access (filename, os.X_OK):
return filename
if not os.environ.has_key('PATH') or os.environ['PATH'] == '':
p = os.defpath
else:
p = os.environ['PATH']
pathlist = p.split(os.pathsep)
for path in pathlist:
f = os.path.join(path, filename)
if os.access(f, os.X_OK):
return f
return None
|
python
|
{
"resource": ""
}
|
q279447
|
spawnb.next
|
test
|
def next (self): # File-like object.
"""This is to support iterators over a file-like object.
"""
result = self.readline()
if result == self._empty_buffer:
raise StopIteration
return result
|
python
|
{
"resource": ""
}
|
q279448
|
spawnb.send
|
test
|
def send(self, s):
"""This sends a string to the child process. This returns the number of
bytes written. If a log file was set then the data is also written to
the log. """
time.sleep(self.delaybeforesend)
s2 = self._cast_buffer_type(s)
if self.logfile is not None:
self.logfile.write(s2)
self.logfile.flush()
if self.logfile_send is not None:
self.logfile_send.write(s2)
self.logfile_send.flush()
c = os.write (self.child_fd, _cast_bytes(s, self.encoding))
return c
|
python
|
{
"resource": ""
}
|
q279449
|
spawnb.sendintr
|
test
|
def sendintr(self):
"""This sends a SIGINT to the child. It does not require
the SIGINT to be the first character on a line. """
if hasattr(termios, 'VINTR'):
char = termios.tcgetattr(self.child_fd)[6][termios.VINTR]
else:
# platform does not define VINTR so assume CTRL-C
char = chr(3)
self.send (char)
|
python
|
{
"resource": ""
}
|
q279450
|
spawnb._prepare_regex_pattern
|
test
|
def _prepare_regex_pattern(self, p):
"Recompile unicode regexes as bytes regexes. Overridden in subclass."
if isinstance(p.pattern, unicode):
p = re.compile(p.pattern.encode('utf-8'), p.flags &~ re.UNICODE)
return p
|
python
|
{
"resource": ""
}
|
q279451
|
spawnb.expect
|
test
|
def expect(self, pattern, timeout = -1, searchwindowsize=-1):
"""This seeks through the stream until a pattern is matched. The
pattern is overloaded and may take several types. The pattern can be a
StringType, EOF, a compiled re, or a list of any of those types.
Strings will be compiled to re types. This returns the index into the
pattern list. If the pattern was not a list this returns index 0 on a
successful match. This may raise exceptions for EOF or TIMEOUT. To
avoid the EOF or TIMEOUT exceptions add EOF or TIMEOUT to the pattern
list. That will cause expect to match an EOF or TIMEOUT condition
instead of raising an exception.
If you pass a list of patterns and more than one matches, the first match
in the stream is chosen. If more than one pattern matches at that point,
the leftmost in the pattern list is chosen. For example::
# the input is 'foobar'
index = p.expect (['bar', 'foo', 'foobar'])
# returns 1 ('foo') even though 'foobar' is a "better" match
Please note, however, that buffering can affect this behavior, since
input arrives in unpredictable chunks. For example::
# the input is 'foobar'
index = p.expect (['foobar', 'foo'])
# returns 0 ('foobar') if all input is available at once,
# but returs 1 ('foo') if parts of the final 'bar' arrive late
After a match is found the instance attributes 'before', 'after' and
'match' will be set. You can see all the data read before the match in
'before'. You can see the data that was matched in 'after'. The
re.MatchObject used in the re match will be in 'match'. If an error
occurred then 'before' will be set to all the data read so far and
'after' and 'match' will be None.
If timeout is -1 then timeout will be set to the self.timeout value.
A list entry may be EOF or TIMEOUT instead of a string. This will
catch these exceptions and return the index of the list entry instead
of raising the exception. The attribute 'after' will be set to the
exception type. The attribute 'match' will be None. This allows you to
write code like this::
index = p.expect (['good', 'bad', pexpect.EOF, pexpect.TIMEOUT])
if index == 0:
do_something()
elif index == 1:
do_something_else()
elif index == 2:
do_some_other_thing()
elif index == 3:
do_something_completely_different()
instead of code like this::
try:
index = p.expect (['good', 'bad'])
if index == 0:
do_something()
elif index == 1:
do_something_else()
except EOF:
do_some_other_thing()
except TIMEOUT:
do_something_completely_different()
These two forms are equivalent. It all depends on what you want. You
can also just expect the EOF if you are waiting for all output of a
child to finish. For example::
p = pexpect.spawn('/bin/ls')
p.expect (pexpect.EOF)
print p.before
If you are trying to optimize for speed then see expect_list().
"""
compiled_pattern_list = self.compile_pattern_list(pattern)
return self.expect_list(compiled_pattern_list, timeout, searchwindowsize)
|
python
|
{
"resource": ""
}
|
q279452
|
spawnb.expect_loop
|
test
|
def expect_loop(self, searcher, timeout = -1, searchwindowsize = -1):
"""This is the common loop used inside expect. The 'searcher' should be
an instance of searcher_re or searcher_string, which describes how and what
to search for in the input.
See expect() for other arguments, return value and exceptions. """
self.searcher = searcher
if timeout == -1:
timeout = self.timeout
if timeout is not None:
end_time = time.time() + timeout
if searchwindowsize == -1:
searchwindowsize = self.searchwindowsize
try:
incoming = self.buffer
freshlen = len(incoming)
while True: # Keep reading until exception or return.
index = searcher.search(incoming, freshlen, searchwindowsize)
if index >= 0:
self.buffer = incoming[searcher.end : ]
self.before = incoming[ : searcher.start]
self.after = incoming[searcher.start : searcher.end]
self.match = searcher.match
self.match_index = index
return self.match_index
# No match at this point
if timeout is not None and timeout < 0:
raise TIMEOUT ('Timeout exceeded in expect_any().')
# Still have time left, so read more data
c = self.read_nonblocking (self.maxread, timeout)
freshlen = len(c)
time.sleep (0.0001)
incoming = incoming + c
if timeout is not None:
timeout = end_time - time.time()
except EOF, e:
self.buffer = self._empty_buffer
self.before = incoming
self.after = EOF
index = searcher.eof_index
if index >= 0:
self.match = EOF
self.match_index = index
return self.match_index
else:
self.match = None
self.match_index = None
raise EOF (str(e) + '\n' + str(self))
except TIMEOUT, e:
self.buffer = incoming
self.before = incoming
self.after = TIMEOUT
index = searcher.timeout_index
if index >= 0:
self.match = TIMEOUT
self.match_index = index
return self.match_index
else:
self.match = None
self.match_index = None
raise TIMEOUT (str(e) + '\n' + str(self))
except:
self.before = incoming
self.after = None
self.match = None
self.match_index = None
raise
|
python
|
{
"resource": ""
}
|
q279453
|
spawn._prepare_regex_pattern
|
test
|
def _prepare_regex_pattern(self, p):
"Recompile bytes regexes as unicode regexes."
if isinstance(p.pattern, bytes):
p = re.compile(p.pattern.decode(self.encoding), p.flags)
return p
|
python
|
{
"resource": ""
}
|
q279454
|
searcher_string.search
|
test
|
def search(self, buffer, freshlen, searchwindowsize=None):
"""This searches 'buffer' for the first occurence of one of the search
strings. 'freshlen' must indicate the number of bytes at the end of
'buffer' which have not been searched before. It helps to avoid
searching the same, possibly big, buffer over and over again.
See class spawn for the 'searchwindowsize' argument.
If there is a match this returns the index of that string, and sets
'start', 'end' and 'match'. Otherwise, this returns -1. """
absurd_match = len(buffer)
first_match = absurd_match
# 'freshlen' helps a lot here. Further optimizations could
# possibly include:
#
# using something like the Boyer-Moore Fast String Searching
# Algorithm; pre-compiling the search through a list of
# strings into something that can scan the input once to
# search for all N strings; realize that if we search for
# ['bar', 'baz'] and the input is '...foo' we need not bother
# rescanning until we've read three more bytes.
#
# Sadly, I don't know enough about this interesting topic. /grahn
for index, s in self._strings:
if searchwindowsize is None:
# the match, if any, can only be in the fresh data,
# or at the very end of the old data
offset = -(freshlen+len(s))
else:
# better obey searchwindowsize
offset = -searchwindowsize
n = buffer.find(s, offset)
if n >= 0 and n < first_match:
first_match = n
best_index, best_match = index, s
if first_match == absurd_match:
return -1
self.match = best_match
self.start = first_match
self.end = self.start + len(self.match)
return best_index
|
python
|
{
"resource": ""
}
|
q279455
|
searcher_re.search
|
test
|
def search(self, buffer, freshlen, searchwindowsize=None):
"""This searches 'buffer' for the first occurence of one of the regular
expressions. 'freshlen' must indicate the number of bytes at the end of
'buffer' which have not been searched before.
See class spawn for the 'searchwindowsize' argument.
If there is a match this returns the index of that string, and sets
'start', 'end' and 'match'. Otherwise, returns -1."""
absurd_match = len(buffer)
first_match = absurd_match
# 'freshlen' doesn't help here -- we cannot predict the
# length of a match, and the re module provides no help.
if searchwindowsize is None:
searchstart = 0
else:
searchstart = max(0, len(buffer)-searchwindowsize)
for index, s in self._searches:
match = s.search(buffer, searchstart)
if match is None:
continue
n = match.start()
if n < first_match:
first_match = n
the_match = match
best_index = index
if first_match == absurd_match:
return -1
self.start = first_match
self.match = the_match
self.end = self.match.end()
return best_index
|
python
|
{
"resource": ""
}
|
q279456
|
log_listener
|
test
|
def log_listener(log:logging.Logger=None, level=logging.INFO):
"""Progress Monitor listener that logs all updates to the given logger"""
if log is None:
log = logging.getLogger("ProgressMonitor")
def listen(monitor):
name = "{}: ".format(monitor.name) if monitor.name is not None else ""
perc = int(monitor.progress * 100)
msg = "[{name}{perc:3d}%] {monitor.message}".format(**locals())
log.log(level, msg)
return listen
|
python
|
{
"resource": ""
}
|
q279457
|
unpack_directory
|
test
|
def unpack_directory(filename, extract_dir, progress_filter=default_filter):
""""Unpack" a directory, using the same interface as for archives
Raises ``UnrecognizedFormat`` if `filename` is not a directory
"""
if not os.path.isdir(filename):
raise UnrecognizedFormat("%s is not a directory" % (filename,))
paths = {filename:('',extract_dir)}
for base, dirs, files in os.walk(filename):
src,dst = paths[base]
for d in dirs:
paths[os.path.join(base,d)] = src+d+'/', os.path.join(dst,d)
for f in files:
name = src+f
target = os.path.join(dst,f)
target = progress_filter(src+f, target)
if not target:
continue # skip non-files
ensure_directory(target)
f = os.path.join(base,f)
shutil.copyfile(f, target)
shutil.copystat(f, target)
|
python
|
{
"resource": ""
}
|
q279458
|
Context.emit
|
test
|
def emit(self, msg, level=1, debug=False):
"""
Emit a message to the user.
:param msg: The message to emit. If ``debug`` is ``True``,
the message will be emitted to ``stderr`` only if
the ``debug`` attribute is ``True``. If ``debug``
is ``False``, the message will be emitted to
``stdout`` under the control of the ``verbose``
attribute.
:param level: Ignored if ``debug`` is ``True``. The message
will only be emitted if the ``verbose``
attribute is greater than or equal to the value
of this parameter. Defaults to 1.
:param debug: If ``True``, marks the message as a debugging
message. The message will only be emitted if
the ``debug`` attribute is ``True``.
"""
# Is it a debug message?
if debug:
if not self.debug:
# Debugging not enabled, don't emit the message
return
stream = sys.stderr
else:
# Not a debugging message; is verbose high enough?
if self.verbose < level:
return
stream = sys.stdout
# Emit the message
print(msg, file=stream)
stream.flush()
|
python
|
{
"resource": ""
}
|
q279459
|
CommandSession.last_error
|
test
|
def last_error(self):
"""Get the output of the last command exevuted."""
if not len(self.log):
raise RuntimeError('Nothing executed')
try:
errs = [l for l in self.log if l[1] != 0]
return errs[-1][2]
except IndexError:
# odd case where there were no errors
#TODO
return 'no last error'
|
python
|
{
"resource": ""
}
|
q279460
|
CommandSession.check_output
|
test
|
def check_output(self, cmd):
"""Wrapper for subprocess.check_output."""
ret, output = self._exec(cmd)
if not ret == 0:
raise CommandError(self)
return output
|
python
|
{
"resource": ""
}
|
q279461
|
Analysis.find_source
|
test
|
def find_source(self, filename):
"""Find the source for `filename`.
Returns two values: the actual filename, and the source.
The source returned depends on which of these cases holds:
* The filename seems to be a non-source file: returns None
* The filename is a source file, and actually exists: returns None.
* The filename is a source file, and is in a zip file or egg:
returns the source.
* The filename is a source file, but couldn't be found: raises
`NoSource`.
"""
source = None
base, ext = os.path.splitext(filename)
TRY_EXTS = {
'.py': ['.py', '.pyw'],
'.pyw': ['.pyw'],
}
try_exts = TRY_EXTS.get(ext)
if not try_exts:
return filename, None
for try_ext in try_exts:
try_filename = base + try_ext
if os.path.exists(try_filename):
return try_filename, None
source = self.coverage.file_locator.get_zip_data(try_filename)
if source:
return try_filename, source
raise NoSource("No source for code: '%s'" % filename)
|
python
|
{
"resource": ""
}
|
q279462
|
Analysis.arcs_executed
|
test
|
def arcs_executed(self):
"""Returns a sorted list of the arcs actually executed in the code."""
executed = self.coverage.data.executed_arcs(self.filename)
m2fl = self.parser.first_line
executed = [(m2fl(l1), m2fl(l2)) for (l1,l2) in executed]
return sorted(executed)
|
python
|
{
"resource": ""
}
|
q279463
|
Analysis.arcs_missing
|
test
|
def arcs_missing(self):
"""Returns a sorted list of the arcs in the code not executed."""
possible = self.arc_possibilities()
executed = self.arcs_executed()
missing = [
p for p in possible
if p not in executed
and p[0] not in self.no_branch
]
return sorted(missing)
|
python
|
{
"resource": ""
}
|
q279464
|
Analysis.arcs_unpredicted
|
test
|
def arcs_unpredicted(self):
"""Returns a sorted list of the executed arcs missing from the code."""
possible = self.arc_possibilities()
executed = self.arcs_executed()
# Exclude arcs here which connect a line to itself. They can occur
# in executed data in some cases. This is where they can cause
# trouble, and here is where it's the least burden to remove them.
unpredicted = [
e for e in executed
if e not in possible
and e[0] != e[1]
]
return sorted(unpredicted)
|
python
|
{
"resource": ""
}
|
q279465
|
Analysis.branch_lines
|
test
|
def branch_lines(self):
"""Returns a list of line numbers that have more than one exit."""
exit_counts = self.parser.exit_counts()
return [l1 for l1,count in iitems(exit_counts) if count > 1]
|
python
|
{
"resource": ""
}
|
q279466
|
Analysis.total_branches
|
test
|
def total_branches(self):
"""How many total branches are there?"""
exit_counts = self.parser.exit_counts()
return sum([count for count in exit_counts.values() if count > 1])
|
python
|
{
"resource": ""
}
|
q279467
|
Analysis.missing_branch_arcs
|
test
|
def missing_branch_arcs(self):
"""Return arcs that weren't executed from branch lines.
Returns {l1:[l2a,l2b,...], ...}
"""
missing = self.arcs_missing()
branch_lines = set(self.branch_lines())
mba = {}
for l1, l2 in missing:
if l1 in branch_lines:
if l1 not in mba:
mba[l1] = []
mba[l1].append(l2)
return mba
|
python
|
{
"resource": ""
}
|
q279468
|
Analysis.branch_stats
|
test
|
def branch_stats(self):
"""Get stats about branches.
Returns a dict mapping line numbers to a tuple:
(total_exits, taken_exits).
"""
exit_counts = self.parser.exit_counts()
missing_arcs = self.missing_branch_arcs()
stats = {}
for lnum in self.branch_lines():
exits = exit_counts[lnum]
try:
missing = len(missing_arcs[lnum])
except KeyError:
missing = 0
stats[lnum] = (exits, exits - missing)
return stats
|
python
|
{
"resource": ""
}
|
q279469
|
Numbers.set_precision
|
test
|
def set_precision(cls, precision):
"""Set the number of decimal places used to report percentages."""
assert 0 <= precision < 10
cls._precision = precision
cls._near0 = 1.0 / 10**precision
cls._near100 = 100.0 - cls._near0
|
python
|
{
"resource": ""
}
|
q279470
|
Numbers._get_pc_covered
|
test
|
def _get_pc_covered(self):
"""Returns a single percentage value for coverage."""
if self.n_statements > 0:
pc_cov = (100.0 * (self.n_executed + self.n_executed_branches) /
(self.n_statements + self.n_branches))
else:
pc_cov = 100.0
return pc_cov
|
python
|
{
"resource": ""
}
|
q279471
|
Numbers._get_pc_covered_str
|
test
|
def _get_pc_covered_str(self):
"""Returns the percent covered, as a string, without a percent sign.
Note that "0" is only returned when the value is truly zero, and "100"
is only returned when the value is truly 100. Rounding can never
result in either "0" or "100".
"""
pc = self.pc_covered
if 0 < pc < self._near0:
pc = self._near0
elif self._near100 < pc < 100:
pc = self._near100
else:
pc = round(pc, self._precision)
return "%.*f" % (self._precision, pc)
|
python
|
{
"resource": ""
}
|
q279472
|
highlight_text
|
test
|
def highlight_text(needles, haystack, cls_name='highlighted', words=False, case=False):
""" Applies cls_name to all needles found in haystack. """
if not needles:
return haystack
if not haystack:
return ''
if words:
pattern = r"(%s)" % "|".join(['\\b{}\\b'.format(re.escape(n)) for n in needles])
else:
pattern = r"(%s)" % "|".join([re.escape(n) for n in needles])
if case:
regex = re.compile(pattern)
else:
regex = re.compile(pattern, re.I)
i, out = 0, ""
for m in regex.finditer(haystack):
out += "".join([haystack[i:m.start()], '<span class="%s">' % cls_name,
haystack[m.start():m.end()], "</span>"])
i = m.end()
return mark_safe(out + haystack[i:])
|
python
|
{
"resource": ""
}
|
q279473
|
highlight
|
test
|
def highlight(string, keywords, cls_name='highlighted'):
""" Given an list of words, this function highlights the matched text in the given string. """
if not keywords:
return string
if not string:
return ''
include, exclude = get_text_tokenizer(keywords)
highlighted = highlight_text(include, string, cls_name)
return highlighted
|
python
|
{
"resource": ""
}
|
q279474
|
highlight_words
|
test
|
def highlight_words(string, keywords, cls_name='highlighted'):
""" Given an list of words, this function highlights the matched words in the given string. """
if not keywords:
return string
if not string:
return ''
include, exclude = get_text_tokenizer(keywords)
highlighted = highlight_text(include, string, cls_name, words=True)
return highlighted
|
python
|
{
"resource": ""
}
|
q279475
|
AbstractSandbox.run
|
test
|
def run(self, func):
"""Run 'func' under os sandboxing"""
try:
self._copy(self)
if _file:
__builtin__.file = self._file
__builtin__.open = self._open
self._active = True
return func()
finally:
self._active = False
if _file:
__builtin__.file = _file
__builtin__.open = _open
self._copy(_os)
|
python
|
{
"resource": ""
}
|
q279476
|
unquote_ends
|
test
|
def unquote_ends(istr):
"""Remove a single pair of quotes from the endpoints of a string."""
if not istr:
return istr
if (istr[0]=="'" and istr[-1]=="'") or \
(istr[0]=='"' and istr[-1]=='"'):
return istr[1:-1]
else:
return istr
|
python
|
{
"resource": ""
}
|
q279477
|
indent
|
test
|
def indent(instr,nspaces=4, ntabs=0, flatten=False):
"""Indent a string a given number of spaces or tabstops.
indent(str,nspaces=4,ntabs=0) -> indent str by ntabs+nspaces.
Parameters
----------
instr : basestring
The string to be indented.
nspaces : int (default: 4)
The number of spaces to be indented.
ntabs : int (default: 0)
The number of tabs to be indented.
flatten : bool (default: False)
Whether to scrub existing indentation. If True, all lines will be
aligned to the same indentation. If False, existing indentation will
be strictly increased.
Returns
-------
str|unicode : string indented by ntabs and nspaces.
"""
if instr is None:
return
ind = '\t'*ntabs+' '*nspaces
if flatten:
pat = re.compile(r'^\s*', re.MULTILINE)
else:
pat = re.compile(r'^', re.MULTILINE)
outstr = re.sub(pat, ind, instr)
if outstr.endswith(os.linesep+ind):
return outstr[:-len(ind)]
else:
return outstr
|
python
|
{
"resource": ""
}
|
q279478
|
marquee
|
test
|
def marquee(txt='',width=78,mark='*'):
"""Return the input string centered in a 'marquee'.
:Examples:
In [16]: marquee('A test',40)
Out[16]: '**************** A test ****************'
In [17]: marquee('A test',40,'-')
Out[17]: '---------------- A test ----------------'
In [18]: marquee('A test',40,' ')
Out[18]: ' A test '
"""
if not txt:
return (mark*width)[:width]
nmark = (width-len(txt)-2)//len(mark)//2
if nmark < 0: nmark =0
marks = mark*nmark
return '%s %s %s' % (marks,txt,marks)
|
python
|
{
"resource": ""
}
|
q279479
|
format_screen
|
test
|
def format_screen(strng):
"""Format a string for screen printing.
This removes some latex-type format codes."""
# Paragraph continue
par_re = re.compile(r'\\$',re.MULTILINE)
strng = par_re.sub('',strng)
return strng
|
python
|
{
"resource": ""
}
|
q279480
|
dedent
|
test
|
def dedent(text):
"""Equivalent of textwrap.dedent that ignores unindented first line.
This means it will still dedent strings like:
'''foo
is a bar
'''
For use in wrap_paragraphs.
"""
if text.startswith('\n'):
# text starts with blank line, don't ignore the first line
return textwrap.dedent(text)
# split first line
splits = text.split('\n',1)
if len(splits) == 1:
# only one line
return textwrap.dedent(text)
first, rest = splits
# dedent everything but the first line
rest = textwrap.dedent(rest)
return '\n'.join([first, rest])
|
python
|
{
"resource": ""
}
|
q279481
|
wrap_paragraphs
|
test
|
def wrap_paragraphs(text, ncols=80):
"""Wrap multiple paragraphs to fit a specified width.
This is equivalent to textwrap.wrap, but with support for multiple
paragraphs, as separated by empty lines.
Returns
-------
list of complete paragraphs, wrapped to fill `ncols` columns.
"""
paragraph_re = re.compile(r'\n(\s*\n)+', re.MULTILINE)
text = dedent(text).strip()
paragraphs = paragraph_re.split(text)[::2] # every other entry is space
out_ps = []
indent_re = re.compile(r'\n\s+', re.MULTILINE)
for p in paragraphs:
# presume indentation that survives dedent is meaningful formatting,
# so don't fill unless text is flush.
if indent_re.search(p) is None:
# wrap paragraph
p = textwrap.fill(p, ncols)
out_ps.append(p)
return out_ps
|
python
|
{
"resource": ""
}
|
q279482
|
_find_optimal
|
test
|
def _find_optimal(rlist , separator_size=2 , displaywidth=80):
"""Calculate optimal info to columnize a list of string"""
for nrow in range(1, len(rlist)+1) :
chk = map(max,_chunks(rlist, nrow))
sumlength = sum(chk)
ncols = len(chk)
if sumlength+separator_size*(ncols-1) <= displaywidth :
break;
return {'columns_numbers' : ncols,
'optimal_separator_width':(displaywidth - sumlength)/(ncols-1) if (ncols -1) else 0,
'rows_numbers' : nrow,
'columns_width' : chk
}
|
python
|
{
"resource": ""
}
|
q279483
|
_get_or_default
|
test
|
def _get_or_default(mylist, i, default=None):
"""return list item number, or default if don't exist"""
if i >= len(mylist):
return default
else :
return mylist[i]
|
python
|
{
"resource": ""
}
|
q279484
|
compute_item_matrix
|
test
|
def compute_item_matrix(items, empty=None, *args, **kwargs) :
"""Returns a nested list, and info to columnize items
Parameters :
------------
items :
list of strings to columize
empty : (default None)
default value to fill list if needed
separator_size : int (default=2)
How much caracters will be used as a separation between each columns.
displaywidth : int (default=80)
The width of the area onto wich the columns should enter
Returns :
---------
Returns a tuple of (strings_matrix, dict_info)
strings_matrix :
nested list of string, the outer most list contains as many list as
rows, the innermost lists have each as many element as colums. If the
total number of elements in `items` does not equal the product of
rows*columns, the last element of some lists are filled with `None`.
dict_info :
some info to make columnize easier:
columns_numbers : number of columns
rows_numbers : number of rows
columns_width : list of with of each columns
optimal_separator_width : best separator width between columns
Exemple :
---------
In [1]: l = ['aaa','b','cc','d','eeeee','f','g','h','i','j','k','l']
...: compute_item_matrix(l,displaywidth=12)
Out[1]:
([['aaa', 'f', 'k'],
['b', 'g', 'l'],
['cc', 'h', None],
['d', 'i', None],
['eeeee', 'j', None]],
{'columns_numbers': 3,
'columns_width': [5, 1, 1],
'optimal_separator_width': 2,
'rows_numbers': 5})
"""
info = _find_optimal(map(len, items), *args, **kwargs)
nrow, ncol = info['rows_numbers'], info['columns_numbers']
return ([[ _get_or_default(items, c*nrow+i, default=empty) for c in range(ncol) ] for i in range(nrow) ], info)
|
python
|
{
"resource": ""
}
|
q279485
|
SList.fields
|
test
|
def fields(self, *fields):
""" Collect whitespace-separated fields from string list
Allows quick awk-like usage of string lists.
Example data (in var a, created by 'a = !ls -l')::
-rwxrwxrwx 1 ville None 18 Dec 14 2006 ChangeLog
drwxrwxrwx+ 6 ville None 0 Oct 24 18:05 IPython
a.fields(0) is ['-rwxrwxrwx', 'drwxrwxrwx+']
a.fields(1,0) is ['1 -rwxrwxrwx', '6 drwxrwxrwx+']
(note the joining by space).
a.fields(-1) is ['ChangeLog', 'IPython']
IndexErrors are ignored.
Without args, fields() just split()'s the strings.
"""
if len(fields) == 0:
return [el.split() for el in self]
res = SList()
for el in [f.split() for f in self]:
lineparts = []
for fd in fields:
try:
lineparts.append(el[fd])
except IndexError:
pass
if lineparts:
res.append(" ".join(lineparts))
return res
|
python
|
{
"resource": ""
}
|
q279486
|
IPythonConsoleApp.build_kernel_argv
|
test
|
def build_kernel_argv(self, argv=None):
"""build argv to be passed to kernel subprocess"""
if argv is None:
argv = sys.argv[1:]
self.kernel_argv = swallow_argv(argv, self.frontend_aliases, self.frontend_flags)
# kernel should inherit default config file from frontend
self.kernel_argv.append("--KernelApp.parent_appname='%s'"%self.name)
|
python
|
{
"resource": ""
}
|
q279487
|
IPythonConsoleApp.init_ssh
|
test
|
def init_ssh(self):
"""set up ssh tunnels, if needed."""
if not self.sshserver and not self.sshkey:
return
if self.sshkey and not self.sshserver:
# specifying just the key implies that we are connecting directly
self.sshserver = self.ip
self.ip = LOCALHOST
# build connection dict for tunnels:
info = dict(ip=self.ip,
shell_port=self.shell_port,
iopub_port=self.iopub_port,
stdin_port=self.stdin_port,
hb_port=self.hb_port
)
self.log.info("Forwarding connections to %s via %s"%(self.ip, self.sshserver))
# tunnels return a new set of ports, which will be on localhost:
self.ip = LOCALHOST
try:
newports = tunnel_to_kernel(info, self.sshserver, self.sshkey)
except:
# even catch KeyboardInterrupt
self.log.error("Could not setup tunnels", exc_info=True)
self.exit(1)
self.shell_port, self.iopub_port, self.stdin_port, self.hb_port = newports
cf = self.connection_file
base,ext = os.path.splitext(cf)
base = os.path.basename(base)
self.connection_file = os.path.basename(base)+'-ssh'+ext
self.log.critical("To connect another client via this tunnel, use:")
self.log.critical("--existing %s" % self.connection_file)
|
python
|
{
"resource": ""
}
|
q279488
|
pretty
|
test
|
def pretty(obj, verbose=False, max_width=79, newline='\n'):
"""
Pretty print the object's representation.
"""
stream = StringIO()
printer = RepresentationPrinter(stream, verbose, max_width, newline)
printer.pretty(obj)
printer.flush()
return stream.getvalue()
|
python
|
{
"resource": ""
}
|
q279489
|
pprint
|
test
|
def pprint(obj, verbose=False, max_width=79, newline='\n'):
"""
Like `pretty` but print to stdout.
"""
printer = RepresentationPrinter(sys.stdout, verbose, max_width, newline)
printer.pretty(obj)
printer.flush()
sys.stdout.write(newline)
sys.stdout.flush()
|
python
|
{
"resource": ""
}
|
q279490
|
_get_mro
|
test
|
def _get_mro(obj_class):
""" Get a reasonable method resolution order of a class and its superclasses
for both old-style and new-style classes.
"""
if not hasattr(obj_class, '__mro__'):
# Old-style class. Mix in object to make a fake new-style class.
try:
obj_class = type(obj_class.__name__, (obj_class, object), {})
except TypeError:
# Old-style extension type that does not descend from object.
# FIXME: try to construct a more thorough MRO.
mro = [obj_class]
else:
mro = obj_class.__mro__[1:-1]
else:
mro = obj_class.__mro__
return mro
|
python
|
{
"resource": ""
}
|
q279491
|
_default_pprint
|
test
|
def _default_pprint(obj, p, cycle):
"""
The default print function. Used if an object does not provide one and
it's none of the builtin objects.
"""
klass = getattr(obj, '__class__', None) or type(obj)
if getattr(klass, '__repr__', None) not in _baseclass_reprs:
# A user-provided repr.
p.text(repr(obj))
return
p.begin_group(1, '<')
p.pretty(klass)
p.text(' at 0x%x' % id(obj))
if cycle:
p.text(' ...')
elif p.verbose:
first = True
for key in dir(obj):
if not key.startswith('_'):
try:
value = getattr(obj, key)
except AttributeError:
continue
if isinstance(value, types.MethodType):
continue
if not first:
p.text(',')
p.breakable()
p.text(key)
p.text('=')
step = len(key) + 1
p.indentation += step
p.pretty(value)
p.indentation -= step
first = False
p.end_group(1, '>')
|
python
|
{
"resource": ""
}
|
q279492
|
_seq_pprinter_factory
|
test
|
def _seq_pprinter_factory(start, end, basetype):
"""
Factory that returns a pprint function useful for sequences. Used by
the default pprint for tuples, dicts, lists, sets and frozensets.
"""
def inner(obj, p, cycle):
typ = type(obj)
if basetype is not None and typ is not basetype and typ.__repr__ != basetype.__repr__:
# If the subclass provides its own repr, use it instead.
return p.text(typ.__repr__(obj))
if cycle:
return p.text(start + '...' + end)
step = len(start)
p.begin_group(step, start)
for idx, x in enumerate(obj):
if idx:
p.text(',')
p.breakable()
p.pretty(x)
if len(obj) == 1 and type(obj) is tuple:
# Special case for 1-item tuples.
p.text(',')
p.end_group(step, end)
return inner
|
python
|
{
"resource": ""
}
|
q279493
|
_dict_pprinter_factory
|
test
|
def _dict_pprinter_factory(start, end, basetype=None):
"""
Factory that returns a pprint function used by the default pprint of
dicts and dict proxies.
"""
def inner(obj, p, cycle):
typ = type(obj)
if basetype is not None and typ is not basetype and typ.__repr__ != basetype.__repr__:
# If the subclass provides its own repr, use it instead.
return p.text(typ.__repr__(obj))
if cycle:
return p.text('{...}')
p.begin_group(1, start)
keys = obj.keys()
try:
keys.sort()
except Exception, e:
# Sometimes the keys don't sort.
pass
for idx, key in enumerate(keys):
if idx:
p.text(',')
p.breakable()
p.pretty(key)
p.text(': ')
p.pretty(obj[key])
p.end_group(1, end)
return inner
|
python
|
{
"resource": ""
}
|
q279494
|
_super_pprint
|
test
|
def _super_pprint(obj, p, cycle):
"""The pprint for the super type."""
p.begin_group(8, '<super: ')
p.pretty(obj.__self_class__)
p.text(',')
p.breakable()
p.pretty(obj.__self__)
p.end_group(8, '>')
|
python
|
{
"resource": ""
}
|
q279495
|
_re_pattern_pprint
|
test
|
def _re_pattern_pprint(obj, p, cycle):
"""The pprint function for regular expression patterns."""
p.text('re.compile(')
pattern = repr(obj.pattern)
if pattern[:1] in 'uU':
pattern = pattern[1:]
prefix = 'ur'
else:
prefix = 'r'
pattern = prefix + pattern.replace('\\\\', '\\')
p.text(pattern)
if obj.flags:
p.text(',')
p.breakable()
done_one = False
for flag in ('TEMPLATE', 'IGNORECASE', 'LOCALE', 'MULTILINE', 'DOTALL',
'UNICODE', 'VERBOSE', 'DEBUG'):
if obj.flags & getattr(re, flag):
if done_one:
p.text('|')
p.text('re.' + flag)
done_one = True
p.text(')')
|
python
|
{
"resource": ""
}
|
q279496
|
_type_pprint
|
test
|
def _type_pprint(obj, p, cycle):
"""The pprint for classes and types."""
if obj.__module__ in ('__builtin__', 'exceptions'):
name = obj.__name__
else:
name = obj.__module__ + '.' + obj.__name__
p.text(name)
|
python
|
{
"resource": ""
}
|
q279497
|
_function_pprint
|
test
|
def _function_pprint(obj, p, cycle):
"""Base pprint for all functions and builtin functions."""
if obj.__module__ in ('__builtin__', 'exceptions') or not obj.__module__:
name = obj.__name__
else:
name = obj.__module__ + '.' + obj.__name__
p.text('<function %s>' % name)
|
python
|
{
"resource": ""
}
|
q279498
|
_exception_pprint
|
test
|
def _exception_pprint(obj, p, cycle):
"""Base pprint for all exceptions."""
if obj.__class__.__module__ in ('exceptions', 'builtins'):
name = obj.__class__.__name__
else:
name = '%s.%s' % (
obj.__class__.__module__,
obj.__class__.__name__
)
step = len(name) + 1
p.begin_group(step, name + '(')
for idx, arg in enumerate(getattr(obj, 'args', ())):
if idx:
p.text(',')
p.breakable()
p.pretty(arg)
p.end_group(step, ')')
|
python
|
{
"resource": ""
}
|
q279499
|
for_type
|
test
|
def for_type(typ, func):
"""
Add a pretty printer for a given type.
"""
oldfunc = _type_pprinters.get(typ, None)
if func is not None:
# To support easy restoration of old pprinters, we need to ignore Nones.
_type_pprinters[typ] = func
return oldfunc
|
python
|
{
"resource": ""
}
|
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