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from __future__ import print_function
__all__ = [
'pyver', 'PY2', 'PY2_6', 'PY3', 'PY3_3', 'PY3_4', 'PY3_5', 'PY3_6', 'PY3_7', 'PY3_11',
'_or_', '_and_', '_xor_', '_inv_', '_abs_', '_add_', '_floordiv_', '_lshift_',
'_rshift_', '_mod_', '_mul_', '_neg_', '_pos_', '_pow_', '_truediv_', '_sub_',
'unicode', 'basestring', 'baseinteger', 'long', 'NoneType', '_Addendum',
'is_descriptor', 'is_dunder', 'is_sunder', 'is_internal_class', 'is_private_name',
'get_attr_from_chain', '_value', 'constant',
'make_class_unpicklable', 'bltin_property',
'skip', 'nonmember', 'member', 'Member', 'NonMember', 'OrderedDict',
]
# imports
import sys as _sys
pyver = _sys.version_info[:2]
PY2 = pyver < (3, )
PY3 = pyver >= (3, )
PY2_6 = (2, 6)
PY3_3 = (3, 3)
PY3_4 = (3, 4)
PY3_5 = (3, 5)
PY3_6 = (3, 6)
PY3_7 = (3, 7)
PY3_11 = (3, 11)
import re
from operator import or_ as _or_, and_ as _and_, xor as _xor_, inv as _inv_
from operator import abs as _abs_, add as _add_, floordiv as _floordiv_
from operator import lshift as _lshift_, rshift as _rshift_, mod as _mod_
from operator import mul as _mul_, neg as _neg_, pos as _pos_, pow as _pow_
from operator import truediv as _truediv_, sub as _sub_
if PY2:
from . import _py2
from ._py2 import *
__all__.extend(_py2.__all__)
if PY3:
from . import _py3
from ._py3 import *
__all__.extend(_py3.__all__)
bltin_property = property
# shims
try:
from collections import OrderedDict
except ImportError:
OrderedDict = dict
try:
unicode
unicode = unicode
except NameError:
# In Python 3 unicode no longer exists (it's just str)
unicode = str
try:
basestring
basestring = bytes, unicode
except NameError:
# In Python 2 basestring is the ancestor of both str and unicode
# in Python 3 it's just str, but was missing in 3.1
basestring = str,
try:
baseinteger = int, long
long = long
except NameError:
baseinteger = int,
long = int
# deprecated
baseint = baseinteger
try:
NoneType
except NameError:
NoneType = type(None)
class _Addendum(object):
def __init__(self, dict, doc, ns):
# dict is the dict to update with functions
# doc is the docstring to put in the dict
# ns is the namespace to remove the function names from
self.dict = dict
self.ns = ns
self.added = set()
def __call__(self, func):
if isinstance(func, (staticmethod, classmethod)):
name = func.__func__.__name__
elif isinstance(func, (property, bltin_property)):
name = (func.fget or func.fset or func.fdel).__name__
else:
name = func.__name__
self.dict[name] = func
self.added.add(name)
return func
def __getitem__(self, name):
return self.dict[name]
def __setitem__(self, name, value):
self.dict[name] = value
def resolve(self):
ns = self.ns
for name in self.added:
del ns[name]
return self.dict
def is_descriptor(obj):
"""Returns True if obj is a descriptor, False otherwise."""
return (
hasattr(obj, '__get__') or
hasattr(obj, '__set__') or
hasattr(obj, '__delete__'))
def is_dunder(name):
"""Returns True if a __dunder__ name, False otherwise."""
return (len(name) > 4 and
name[:2] == name[-2:] == '__' and
name[2] != '_' and
name[-3] != '_')
def is_sunder(name):
"""Returns True if a _sunder_ name, False otherwise."""
return (len(name) > 2 and
name[0] == name[-1] == '_' and
name[1] != '_' and
name[-2] != '_')
def is_internal_class(cls_name, obj):
# only 3.3 and up, always return False in 3.2 and below
if pyver < PY3_3:
return False
else:
qualname = getattr(obj, '__qualname__', False)
return not is_descriptor(obj) and qualname and re.search(r"\.?%s\.\w+$" % cls_name, qualname)
def is_private_name(cls_name, name):
pattern = r'^_%s__\w+[^_]_?$' % (cls_name, )
return re.search(pattern, name)
def get_attr_from_chain(cls, attr):
sentinel = object()
for basecls in cls.mro():
obj = basecls.__dict__.get(attr, sentinel)
if obj is not sentinel:
return obj
def _value(obj):
if isinstance(obj, (auto, constant)):
return obj.value
else:
return obj
class constant(object):
'''
Simple constant descriptor for NamedConstant and Enum use.
'''
def __init__(self, value, doc=None):
self.value = value
self.__doc__ = doc
def __get__(self, *args):
return self.value
def __repr__(self):
return '%s(%r)' % (self.__class__.__name__, self.value)
def __and__(self, other):
return _and_(self.value, _value(other))
def __rand__(self, other):
return _and_(_value(other), self.value)
def __invert__(self):
return _inv_(self.value)
def __or__(self, other):
return _or_(self.value, _value(other))
def __ror__(self, other):
return _or_(_value(other), self.value)
def __xor__(self, other):
return _xor_(self.value, _value(other))
def __rxor__(self, other):
return _xor_(_value(other), self.value)
def __abs__(self):
return _abs_(self.value)
def __add__(self, other):
return _add_(self.value, _value(other))
def __radd__(self, other):
return _add_(_value(other), self.value)
def __neg__(self):
return _neg_(self.value)
def __pos__(self):
return _pos_(self.value)
if PY2:
def __div__(self, other):
return _div_(self.value, _value(other))
def __rdiv__(self, other):
return _div_(_value(other), (self.value))
def __floordiv__(self, other):
return _floordiv_(self.value, _value(other))
def __rfloordiv__(self, other):
return _floordiv_(_value(other), self.value)
def __truediv__(self, other):
return _truediv_(self.value, _value(other))
def __rtruediv__(self, other):
return _truediv_(_value(other), self.value)
def __lshift__(self, other):
return _lshift_(self.value, _value(other))
def __rlshift__(self, other):
return _lshift_(_value(other), self.value)
def __rshift__(self, other):
return _rshift_(self.value, _value(other))
def __rrshift__(self, other):
return _rshift_(_value(other), self.value)
def __mod__(self, other):
return _mod_(self.value, _value(other))
def __rmod__(self, other):
return _mod_(_value(other), self.value)
def __mul__(self, other):
return _mul_(self.value, _value(other))
def __rmul__(self, other):
return _mul_(_value(other), self.value)
def __pow__(self, other):
return _pow_(self.value, _value(other))
def __rpow__(self, other):
return _pow_(_value(other), self.value)
def __sub__(self, other):
return _sub_(self.value, _value(other))
def __rsub__(self, other):
return _sub_(_value(other), self.value)
def __set_name__(self, ownerclass, name):
self.name = name
self.clsname = ownerclass.__name__
def make_class_unpicklable(obj):
"""
Make the given obj un-picklable.
obj should be either a dictionary, on an Enum
"""
def _break_on_call_reduce(self, proto):
raise TypeError('%r cannot be pickled' % self)
if isinstance(obj, dict):
obj['__reduce_ex__'] = _break_on_call_reduce
obj['__module__'] = '<unknown>'
else:
setattr(obj, '__reduce_ex__', _break_on_call_reduce)
setattr(obj, '__module__', '<unknown>')
class NonMember(object):
"""
Protects item from becaming an Enum member during class creation.
"""
def __init__(self, value):
self.value = value
def __get__(self, instance, ownerclass=None):
return self.value
skip = nonmember = NonMember
class Member(object):
"""
Forces item to became an Enum member during class creation.
"""
def __init__(self, value):
self.value = value
member = Member
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