question_id
int64 1.48k
42.8M
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stringlengths 11
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247,770 |
Retrieving python module path
|
get the path of the current python module
|
print(os.getcwd())
|
247,770 |
Retrieving python module path
|
get the path of the python module `amodule`
|
path = os.path.abspath(amodule.__file__)
|
7,026,131 |
Padding a list in python with particular value
|
fill list `myList` with 4 0's
|
self.myList.extend([0] * (4 - len(self.myList)))
|
22,918,212 |
Fastest Way to Drop Duplicated Index in a Pandas DataFrame
|
drop duplicate indexes in a pandas data frame `df`
|
df[~df.index.duplicated()]
|
13,891,559 |
Is there a more pythonic way of exploding a list over a function's arguments?
|
unpack elements of list `i` as arguments into function `foo`
|
foo(*i)
|
12,030,074 |
Generate list of numbers in specific format
|
generate list of numbers in specific format using string formatting precision.
|
[('%.2d' % i) for i in range(16)]
|
3,411,025 |
Summarizing a dictionary of arrays in Python
|
sort dictionary `mydict` in descending order based on the sum of each value in it
|
sorted(iter(mydict.items()), key=lambda tup: sum(tup[1]), reverse=True)[:3]
|
3,411,025 |
Summarizing a dictionary of arrays in Python
|
get top `3` items from a dictionary `mydict` with largest sum of values
|
heapq.nlargest(3, iter(mydict.items()), key=lambda tup: sum(tup[1]))
|
3,847,472 |
get index of character in python list
|
get index of character 'b' in list '['a', 'b']'
|
['a', 'b'].index('b')
|
12,402,561 |
How to set font size of Matplotlib axis Legend?
|
set font size of axis legend of plot `plt` to 'xx-small'
|
plt.setp(legend.get_title(), fontsize='xx-small')
|
2,508,861 |
Python: Convert a string to an integer
| null |
int(' 23 ')
|
3,308,102 |
How to extract the n-th elements from a list of tuples in python?
|
extract the 2nd elements from a list of tuples
|
[x[1] for x in elements]
|
16,114,333 |
getting the opposite diagonal of a numpy array
|
get the opposite diagonal of a numpy array `array`
|
np.diag(np.rot90(array))
|
10,941,229 |
Convert list of tuples to list?
|
flatten list of tuples `a`
|
list(chain.from_iterable(a))
|
36,957,908 |
Removing white space from txt with python
|
substitute two or more whitespace characters with character '|' in string `line`
|
re.sub('\\s{2,}', '|', line.strip())
|
455,612 |
Limiting floats to two decimal points
|
print float `a` with two decimal points
|
print(('%.2f' % a))
|
455,612 |
Limiting floats to two decimal points
|
print float `a` with two decimal points
|
print(('{0:.2f}'.format(a)))
|
455,612 |
Limiting floats to two decimal points
|
print float `a` with two decimal points
|
print(('{0:.2f}'.format(round(a, 2))))
|
455,612 |
Limiting floats to two decimal points
|
print float `a` with two decimal points
|
print(('%.2f' % round(a, 2)))
|
455,612 |
Limiting floats to two decimal points
|
limit float 13.9499999 to two decimal points
|
('%.2f' % 13.9499999)
|
455,612 |
Limiting floats to two decimal points
|
limit float 3.14159 to two decimal points
|
('%.2f' % 3.14159)
|
455,612 |
Limiting floats to two decimal points
|
limit float 13.949999999999999 to two decimal points
|
float('{0:.2f}'.format(13.95))
|
455,612 |
Limiting floats to two decimal points
|
limit float 13.949999999999999 to two decimal points
|
'{0:.2f}'.format(13.95)
|
9,652,832 |
How to I load a tsv file into a Pandas DataFrame?
|
load a tsv file `c:/~/trainSetRel3.txt` into a pandas data frame
|
DataFrame.from_csv('c:/~/trainSetRel3.txt', sep='\t')
|
18,722,196 |
How to set UTC offset for datetime?
|
set UTC offset by 9 hrs ahead for date '2013/09/11 00:17'
|
dateutil.parser.parse('2013/09/11 00:17 +0900')
|
8,671,702 |
Passing list of parameters to SQL in psycopg2
|
pass a list of parameters `((1, 2, 3),) to sql queue 'SELECT * FROM table WHERE column IN %s;'
|
cur.mogrify('SELECT * FROM table WHERE column IN %s;', ((1, 2, 3),))
|
9,497,290 |
How would I sum a multi-dimensional array in the most succinct python?
|
sum all elements of two-dimensions list `[[1, 2, 3, 4], [2, 4, 5, 6]]]`
|
sum([sum(x) for x in [[1, 2, 3, 4], [2, 4, 5, 6]]])
|
3,097,866 |
Access an arbitrary element in a dictionary in Python
|
Retrieve an arbitrary value from dictionary `dict`
|
next(iter(dict.values()))
|
3,097,866 |
Access an arbitrary element in a dictionary in Python
|
access an arbitrary value from dictionary `dict`
|
next(iter(list(dict.values())))
|
42,012,589 |
Pandas: aggregate based on filter on another column
|
group dataframe `df` by columns 'Month' and 'Fruit'
|
df.groupby(['Month', 'Fruit']).sum().unstack(level=0)
|
13,408,919 |
sorting list of tuples by arbitrary key
|
sort list `mylist` of tuples by arbitrary key from list `order`
|
sorted(mylist, key=lambda x: order.index(x[1]))
|
39,804,375 |
Python - Sort a list of dics by value of dict`s dict value
|
sort a list of dictionary `persons` according to the key `['passport']['birth_info']['date']`
|
sorted(persons, key=lambda x: x['passport']['birth_info']['date'])
|
6,250,046 |
How can I remove the fragment identifier from a URL?
|
remove the fragment identifier `#something` from a url `http://www.address.com/something#something`
|
urlparse.urldefrag('http://www.address.com/something#something')
|
21,018,612 |
How to download to a specific directory with Python?
|
download to a directory '/path/to/dir/filename.ext' from source 'http://example.com/file.ext'
|
urllib.request.urlretrieve('http://example.com/file.ext', '/path/to/dir/filename.ext')
|
32,296,933 |
removing duplicates of a list of sets
|
remove all duplicates from a list of sets `L`
|
list(set(frozenset(item) for item in L))
|
32,296,933 |
removing duplicates of a list of sets
|
remove duplicates from a list of sets 'L'
|
[set(item) for item in set(frozenset(item) for item in L)]
|
17,856,928 |
How to terminate process from Python using pid?
|
terminate process `p`
|
p.terminate()
|
14,465,279 |
Delete all objects in a list
|
delete all values in a list `mylist`
|
del mylist[:]
|
3,365,673 |
How to throw an error window in Python in Windows
|
throw an error window in python in windows
|
ctypes.windll.user32.MessageBoxW(0, 'Error', 'Error', 0)
|
3,845,423 |
Remove empty strings from a list of strings
|
remove empty strings from list `str_list`
|
str_list = list([_f for _f in str_list if _f])
|
4,270,742 |
How to remove whitespace in BeautifulSoup
|
remove newlines and whitespace from string `yourstring`
|
re.sub('[\\ \\n]{2,}', '', yourstring)
|
35,118,265 |
Dot notation string manipulation
|
remove the last dot and all text beyond it in string `s`
|
re.sub('\\.[^.]+$', '', s)
|
40,055,835 |
Removing elements from an array that are in another array
|
remove elements from an array `A` that are in array `B`
|
A[np.all(np.any(A - B[:, (None)], axis=2), axis=0)]
|
21,206,395 |
write to csv from DataFrame python pandas
|
Write column 'sum' of DataFrame `a` to csv file 'test.csv'
|
a.to_csv('test.csv', cols=['sum'])
|
1,186,789 |
call a Python script from another Python script
|
call a Python script "test2.py"
|
exec(compile(open('test2.py').read(), 'test2.py', 'exec'))
|
1,186,789 |
call a Python script from another Python script
|
call a Python script "test1.py"
|
subprocess.call('test1.py', shell=True)
|
7,142,227 |
How do I sort a zipped list in Python?
|
sort a zipped list `zipped` using lambda function
|
sorted(zipped, key=lambda x: x[1])
|
7,142,227 |
How do I sort a zipped list in Python?
| null |
zipped.sort(key=lambda t: t[1])
|
7,742,752 |
Sorting a dictionary by value then by key
|
sort a dictionary `y` by value then by key
|
sorted(list(y.items()), key=lambda x: (x[1], x[0]), reverse=True)
|
19,011,613 |
Using BeautifulSoup to select div blocks within HTML
|
using beautifulsoup to select div blocks within html `soup`
|
soup.find_all('div', class_='crBlock ')
|
31,267,493 |
Remove list of indices from a list in Python
|
remove elements from list `centroids` the indexes of which are in array `index`
|
[element for i, element in enumerate(centroids) if i not in index]
|
11,697,709 |
Comparing two lists in Python
|
list duplicated elements in two lists `listA` and `listB`
|
list(set(listA) & set(listB))
|
19,602,931 |
http file downloading and saving
|
download "http://randomsite.com/file.gz" from http and save as "file.gz"
|
testfile = urllib.request.URLopener()
testfile.retrieve('http://randomsite.com/file.gz', 'file.gz')
|
19,602,931 |
http file downloading and saving
|
download file from http url "http://randomsite.com/file.gz" and save as "file.gz"
|
urllib.request.urlretrieve('http://randomsite.com/file.gz', 'file.gz')
|
19,602,931 |
http file downloading and saving
|
download file from http url `file_url`
|
file_name = wget.download(file_url)
|
2,406,700 |
Accented characters in Matplotlib
|
set an array of unicode characters `[u'\xe9', u'\xe3', u'\xe2']` as labels in Matplotlib `ax`
|
ax.set_yticklabels(['\xe9', '\xe3', '\xe2'])
|
41,727,442 |
How to get a list of all integer points in an n-dimensional cube using python?
|
get a list of all integer points in a `dim` dimensional hypercube with coordinates from `-x` to `y` for all dimensions
|
list(itertools.product(list(range(-x, y)), repeat=dim))
|
20,774,910 |
How can I convert a unicode string into string literals in Python 2.7?
|
convert unicode string `s` into string literals
|
print(s.encode('unicode_escape'))
|
18,391,059 |
python - How to format variable number of arguments into a string?
|
how to format a list of arguments `my_args` into a string
|
'Hello %s' % ', '.join(my_args)
|
8,970,524 |
Python regex search AND split
|
search and split string 'aaa bbb ccc ddd eee fff' by delimiter '(ddd)'
|
re.split('(ddd)', 'aaa bbb ccc ddd eee fff', 1)
|
8,970,524 |
Python regex search AND split
|
regex search and split string 'aaa bbb ccc ddd eee fff' by delimiter '(d(d)d)'
|
re.split('(d(d)d)', 'aaa bbb ccc ddd eee fff', 1)
|
20,638,006 |
Convert list of dictionaries to Dataframe
|
convert a list of dictionaries `d` to pandas data frame
|
pd.DataFrame(d)
|
9,206,964 |
How to split string into words that do not contain whitespaces in python?
|
split string "This is a string" into words that do not contain whitespaces
|
"""This is a string""".split()
|
9,206,964 |
How to split string into words that do not contain whitespaces in python?
|
split string "This is a string" into words that does not contain whitespaces
|
"""This is a string""".split()
|
12,182,744 |
python pandas: apply a function with arguments to a series
| null |
my_series.apply(your_function, args=(2, 3, 4), extra_kw=1)
|
6,764,909 |
Python: How to remove all duplicate items from a list
|
remove all duplicate items from a list `lseperatedOrblist`
|
woduplicates = list(set(lseperatedOrblist))
|
34,437,284 |
Sum of product of combinations in a list
|
sum of product of combinations in a list `l`
|
sum([(i * j) for i, j in list(itertools.combinations(l, 2))])
|
5,900,683 |
Using variables in Python regular expression
|
regular expression for validating string 'user' containing a sequence of characters ending with '-' followed by any number of digits.
|
re.compile('{}-\\d*'.format(user))
|
1,614,236 |
In Python, how do I convert all of the items in a list to floats?
|
convert all of the items in a list `lst` to float
|
[float(i) for i in lst]
|
13,840,379 |
How can I multiply all items in a list together with Python?
|
multiply all items in a list `[1, 2, 3, 4, 5, 6]` together
|
from functools import reduce
reduce(lambda x, y: x * y, [1, 2, 3, 4, 5, 6])
|
8,687,568 |
How to write a tuple of tuples to a CSV file using Python
|
write a tuple of tuples `A` to a csv file using python
|
writer.writerow(A)
|
8,687,568 |
How to write a tuple of tuples to a CSV file using Python
|
Write all tuple of tuples `A` at once into csv file
|
writer.writerows(A)
|
4,928,526 |
python, format string
|
python, format string "{} %s {}" to have 'foo' and 'bar' in the first and second positions
|
"""{} %s {}""".format('foo', 'bar')
|
13,781,828 |
Replace a string in list of lists
|
Truncate `\r\n` from each string in a list of string `example`
|
example = [x.replace('\r\n', '') for x in example]
|
23,145,240 |
Python: split elements of a list
|
split elements of a list `l` by '\t'
|
[i.partition('\t')[-1] for i in l if '\t' in i]
|
20,062,565 |
Splitting a string by using two substrings in Python
|
search for regex pattern 'Test(.*)print' in string `testStr` including new line character '\n'
|
re.search('Test(.*)print', testStr, re.DOTALL)
|
20,457,174 |
python, locating and clicking a specific button with selenium
|
find button that is in li class `next` and assign it to variable `next`
|
next = driver.find_element_by_css_selector('li.next>a')
|
6,591,931 |
Getting file size in Python?
|
get the size of file 'C:\\Python27\\Lib\\genericpath.py'
|
os.stat('C:\\Python27\\Lib\\genericpath.py').st_size
|
18,493,677 |
how do i return a string from a regex match in python
|
return a string from a regex match with pattern '<img.*?>' in string 'line'
|
imtag = re.match('<img.*?>', line).group(0)
|
8,735,312 |
How to change folder names in python?
|
Rename a folder `Joe Blow` to `Blow, Joe`
|
os.rename('Joe Blow', 'Blow, Joe')
|
11,430,863 |
How to find overlapping matches with a regexp?
|
find overlapping matches from a string `hello` using regex
|
re.findall('(?=(\\w\\w))', 'hello')
|
1,476 |
express binary literals
|
convert 173 to binary string
|
bin(173)
|
1,476 |
express binary literals
|
convert binary string '01010101111' to integer
|
int('01010101111', 2)
|
1,476 |
express binary literals
|
convert binary string '010101' to integer
|
int('010101', 2)
|
1,476 |
express binary literals
|
convert binary string '0b0010101010' to integer
|
int('0b0010101010', 2)
|
1,476 |
express binary literals
|
convert 21 to binary string
|
bin(21)
|
1,476 |
express binary literals
|
convert binary string '11111111' to integer
|
int('11111111', 2)
|
817,122 |
Delete digits in Python (Regex)
|
delete all digits in string `s` that are not directly attached to a word character
|
re.sub('$\\d+\\W+|\\b\\d+\\b|\\W+\\d+$', '', s)
|
817,122 |
Delete digits in Python (Regex)
|
delete digits at the end of string `s`
|
re.sub('\\b\\d+\\b', '', s)
|
817,122 |
Delete digits in Python (Regex)
|
Delete self-contained digits from string `s`
|
s = re.sub('^\\d+\\s|\\s\\d+\\s|\\s\\d+$', ' ', s)
|
436,599 |
Python Split String
|
truncate string `s` up to character ':'
|
s.split(':', 1)[1]
|
5,864,485 |
How can I split this comma-delimited string in Python?
|
print a string `s` by splitting with comma `,`
|
print(s.split(','))
|
5,864,485 |
How can I split this comma-delimited string in Python?
|
Create list by splitting string `mystring` using "," as delimiter
|
mystring.split(',')
|
31,405,409 |
How to remove parentheses only around single words in a string
|
remove parentheses only around single words in a string `s` using regex
|
re.sub('\\((\\w+)\\)', '\\1', s)
|
4,302,027 |
how to open a url in python
|
webbrowser open url `url`
|
webbrowser.open_new(url)
|
4,302,027 |
how to open a url in python
|
webbrowser open url 'http://example.com'
|
webbrowser.open('http://example.com')
|
20,668,060 |
PyQt QPushButton Background color
|
change the background colour of the button `pushbutton` to red
|
self.pushButton.setStyleSheet('background-color: red')
|
4,231,345 |
Zip and apply a list of functions over a list of values in Python
|
apply a list of functions named 'functions' over a list of values named 'values'
|
[x(y) for x, y in zip(functions, values)]
|
14,306,852 |
How do I modify the width of a TextCtrl in wxPython?
|
modify the width of a text control as `300` keeping default height in wxpython
|
wx.TextCtrl(self, -1, size=(300, -1))
|
14,111,705 |
Displaying a grayscale Image
|
display a grayscale image from array of pixels `imageArray`
|
imshow(imageArray, cmap='Greys_r')
|
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