question_id
int64 1.48k
42.8M
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stringlengths 11
122
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5,280,178 |
How do I load a file into the python console?
|
load a file `file.py` into the python console
|
exec(compile(open('file.py').read(), 'file.py', 'exec'))
|
10,822,635 |
Get the number of rows in table using SQLAlchemy
|
SQLAlchemy count the number of rows in table `Congress`
|
rows = session.query(Congress).count()
|
18,742,657 |
Execute Shell Script from python with variable
| null |
subprocess.call(['test.sh', str(domid)])
|
16,888,888 |
How to read a .xlsx file using the pandas Library in iPython?
|
read excel file `file_name` using pandas
|
dfs = pd.read_excel(file_name, sheetname=None)
|
38,831,808 |
Reading hex to double-precision float python
|
unpack the binary data represented by the hexadecimal string '4081637ef7d0424a' to a float
|
struct.unpack('d', binascii.unhexlify('4081637ef7d0424a'))
|
5,508,352 |
Indexing numpy array with another numpy array
|
Get index of numpy array `a` with another numpy array `b`
|
a[tuple(b)]
|
9,040,939 |
How to find all possible sequences of elements in a list?
|
find all possible sequences of elements in a list `[2, 3, 4]`
|
map(list, permutations([2, 3, 4]))
|
36,518,800 |
Sort a list in python based on another sorted list
|
sort a list `unsorted_list` based on another sorted list `presorted_list`
|
sorted(unsorted_list, key=presorted_list.index)
|
19,779,790 |
How to get yesterday in python
| null |
datetime.datetime.now() - datetime.timedelta(days=1)
|
22,963,263 |
Creating a zero-filled pandas data frame
|
create a dataframe `d` filled with zeros with indices from 0 to length of `data` and column names from `feature_list`
|
d = pd.DataFrame(0, index=np.arange(len(data)), columns=feature_list)
|
674,764 |
string find
|
find the index of sub string 'World' in `x`
|
x.find('World')
|
674,764 |
string find
|
find the index of sub string 'Aloha' in `x`
|
x.find('Aloha')
|
674,764 |
string find
|
find the index of sub string 'cc' in string 'sdfasdf'
|
'sdfasdf'.index('cc')
|
674,764 |
string find
|
find the index of sub string 'df' in string 'sdfasdf'
|
'sdfasdf'.index('df')
|
674,764 |
string find
|
find the index of sub string 'a' in string `str`
|
str.find('a')
|
674,764 |
string find
|
find the index of sub string 'g' in string `str`
|
str.find('g')
|
674,764 |
string find
|
find the index of sub string 's' in string `str` starting from index 11
|
str.find('s', 11)
|
674,764 |
string find
|
find the index of sub string 's' in string `str` starting from index 15
|
str.find('s', 15)
|
674,764 |
string find
|
find the index of sub string 's' in string `str` starting from index 16
|
str.find('s', 16)
|
674,764 |
string find
|
find the index of sub string 's' in string `str` starting from index 11 and ending at index 14
|
str.find('s', 11, 14)
|
17,627,531 |
Sort list of date strings
|
sort list of date strings 'd'
|
sorted(d, key=lambda x: datetime.datetime.strptime(x, '%m-%Y'))
|
27,946,742 |
Regular expression in Python sentence extractor
|
Get all the sentences from a string `text` using regex
|
re.split('\\.\\s', text)
|
27,946,742 |
Regular expression in Python sentence extractor
| null |
re.split('\\.\\s', re.sub('\\.\\s*$', '', text))
|
8,247,792 |
Python - How to cut a string in Python?
|
get all characters in string 'foobar' up to the fourth index
|
"""foobar"""[:4]
|
8,247,792 |
Python - How to cut a string in Python?
|
cut a string by delimiter '&'
|
s.rfind('&')
|
8,247,792 |
Python - How to cut a string in Python?
|
cut a string using delimiter '&'
|
s[:s.rfind('&')]
|
32,874,539 |
Using a variable in xpath in Python Selenium
|
find a tag `option` whose `value` attribute is `state` in selenium
|
driver.find_element_by_xpath("//option[@value='" + state + "']").click()
|
4,706,499 |
append to a file
|
append line "appended text" to file "test.txt"
|
with open('test.txt', 'a') as myfile:
myfile.write('appended text')
|
4,706,499 |
append to a file
|
append line "cool beans..." to file "foo"
|
with open('foo', 'a') as f:
f.write('cool beans...')
|
4,706,499 |
append to a file
|
append to file 'test1' content 'koko'
|
with open('test1', 'ab') as f:
pass
|
4,706,499 |
append to a file
|
append to file 'test' content 'koko'
|
open('test', 'a+b').write('koko')
|
18,312,447 |
How can I split a string into tokens?
|
split string 'x+13.5*10x-4e1' into tokens
|
print([i for i in re.split('([\\d.]+|\\W+)', 'x+13.5*10x-4e1') if i])
|
34,587,346 |
Python: Check if a string contains chinese character?
|
Find all Chinese characters in string `ipath`
|
re.findall('[\u4e00-\u9fff]+', ipath)
|
13,128,565 |
String splitting in Python
|
split string `s` by letter 's'
|
s.split('s')
|
1,196,074 |
How to start a background process in Python?
|
run shell command 'rm -r some.file' in the background
|
subprocess.Popen(['rm', '-r', 'some.file'])
|
8,303,993 |
Elegant way to transform a list of dict into a dict of dicts
|
convert a list of dictionaries `listofdict into a dictionary of dictionaries
|
dict((d['name'], d) for d in listofdict)
|
311,627 |
print date in a regular format
|
print current date and time in a regular format
|
datetime.datetime.now().strftime('%Y-%m-%d %H:%M')
|
311,627 |
print date in a regular format
|
print current date and time in a regular format
|
time.strftime('%Y-%m-%d %H:%M')
|
27,744,882 |
Finding consecutive consonants in a word
|
find consecutive consonants in a word `CONCENTRATION` using regex
|
re.findall('[bcdfghjklmnpqrstvwxyz]+', 'CONCERTATION', re.IGNORECASE)
|
4,111,412 |
How do I get a list of indices of non zero elements in a list?
|
get a list of indices of non zero elements in a list `a`
|
[i for i, e in enumerate(a) if e != 0]
|
11,339,210 |
How to get integer values from a string in Python?
|
get multiple integer values from a string 'string1'
|
map(int, re.findall('\\d+', string1))
|
647,515 |
How can I know python's path under windows?
|
get the path of Python executable under windows
|
os.path.dirname(sys.executable)
|
14,406,214 |
Moving x-axis to the top of a plot in matplotlib
|
move an x-axis label to the top of a plot `ax` in matplotlib
|
ax.xaxis.set_label_position('top')
|
14,406,214 |
Moving x-axis to the top of a plot in matplotlib
|
move x-axis to the top of a plot `ax`
|
ax.xaxis.tick_top()
|
14,406,214 |
Moving x-axis to the top of a plot in matplotlib
|
Move x-axis of the pyplot object `ax` to the top of a plot in matplotlib
|
ax.xaxis.set_ticks_position('top')
|
25,279,993 |
Parsing non-zero padded timestamps in Python
|
parse string '2015/01/01 12:12am' to DateTime object using format '%Y/%m/%d %I:%M%p'
|
datetime.strptime('2015/01/01 12:12am', '%Y/%m/%d %I:%M%p')
|
16,387,069 |
Open images
|
Open image 'picture.jpg'
|
img = Image.open('picture.jpg')
img.show()
|
16,387,069 |
Open images
|
Open image "picture.jpg"
|
img = Image.open('picture.jpg')
Img.show
|
179,369 |
How do I abort the execution of a Python script?
|
terminate the script using status value 0
|
sys.exit(0)
|
179,369 |
How do I abort the execution of a Python script?
|
abort the execution of the script using message 'aa! errors!'
|
sys.exit('aa! errors!')
|
179,369 |
How do I abort the execution of a Python script?
|
abort the execution of a python script
|
sys.exit()
|
34,543,513 |
Find maximum with limited length in a list
|
find maximum with lookahead = 4 in a list `arr`
|
[max(abs(x) for x in arr[i:i + 4]) for i in range(0, len(arr), 4)]
|
1,810,743 |
How to set the current working directory in Python?
|
set the current working directory to 'c:\\Users\\uname\\desktop\\python'
|
os.chdir('c:\\Users\\uname\\desktop\\python')
|
1,810,743 |
How to set the current working directory in Python?
|
set the current working directory to path `path`
|
os.chdir(path)
|
3,159,155 |
How to remove all integer values from a list in python
|
get a list `no_integers` of all the items in list `mylist` that are not of type `int`
|
no_integers = [x for x in mylist if not isinstance(x, int)]
|
2,637,760 |
How do I match contents of an element in XPath (lxml)?
|
match contents of an element to 'Example' in xpath (lxml)
|
tree.xpath(".//a[text()='Example']")[0].tag
|
40,512,124 |
convert dictionaries into string python
|
concatenate key/value pairs in dictionary `a` with string ', ' into a single string
|
""", """.join([(str(k) + ' ' + str(v)) for k, v in list(a.items())])
|
16,866,261 |
Detecting non-ascii characters in unicode string
|
Strip all non-ASCII characters from a unicode string, `\xa3\u20ac\xa3\u20ac`
|
print(set(re.sub('[\x00-\x7f]', '', '\xa3\u20ac\xa3\u20ac')))
|
16,866,261 |
Detecting non-ascii characters in unicode string
|
Get all non-ascii characters in a unicode string `\xa3100 is worth more than \u20ac100`
|
print(re.sub('[\x00-\x7f]', '', '\xa3100 is worth more than \u20ac100'))
|
988,228 |
Convert a String representation of a Dictionary to a dictionary?
|
build a dict of key:value pairs from a string representation of a dict, `{'muffin' : 'lolz', 'foo' : 'kitty'}`
|
ast.literal_eval("{'muffin' : 'lolz', 'foo' : 'kitty'}")
|
13,793,973 |
Easiest way to remove unicode representations from a string in python 3?
|
Print string `t` with proper unicode representations
|
print(t.decode('unicode_escape'))
|
10,525,301 |
String encoding and decoding from possibly latin1 and utf8
|
Normalize string `str` from 'cp1252' code to 'utf-8' code
|
print(str.encode('cp1252').decode('utf-8').encode('cp1252').decode('utf-8'))
|
2,407,398 |
merge lists into a list of tuples
|
merge lists `list_a` and `list_b` into a list of tuples
|
zip(list_a, list_b)
|
2,407,398 |
merge lists into a list of tuples
|
merge lists `a` and `a` into a list of tuples
|
list(zip(a, b))
|
18,695,605 |
python pandas dataframe to dictionary
|
convert pandas DataFrame `df` to a dictionary using `id` field as the key
|
df.set_index('id').to_dict()
|
18,695,605 |
python pandas dataframe to dictionary
|
convert pandas dataframe `df` with fields 'id', 'value' to dictionary
|
df.set_index('id')['value'].to_dict()
|
1,534,542 |
Can I sort text by its numeric value in Python?
| null |
sorted(list(mydict.items()), key=lambda a: map(int, a[0].split('.')))
|
640,001 |
How can I remove text within parentheses with a regex?
|
remove parentheses and text within it in string `filename`
|
re.sub('\\([^)]*\\)', '', filename)
|
29,454,773 |
How can I tell if a string only contains letter AND spaces
|
Check if string 'a b' only contains letters and spaces
|
"""a b""".replace(' ', '').isalpha()
|
14,050,824 |
Add SUM of values of two LISTS into new LIST
|
sum each element `x` in list `first` with element `y` at the same index in list `second`.
|
[(x + y) for x, y in zip(first, second)]
|
11,932,729 |
How to sort a Python dictionary by value?
|
sort a python dictionary `a_dict` by element `1` of the value
|
sorted(list(a_dict.items()), key=lambda item: item[1][1])
|
4,108,561 |
How to exclude a character from a regex group?
| null |
re.compile('[^a-zA-Z0-9-]+')
|
13,070,461 |
Get index of the top n values of a list in python
|
get index of the biggest 2 values of a list `a`
|
sorted(list(range(len(a))), key=lambda i: a[i])[-2:]
|
13,070,461 |
Get index of the top n values of a list in python
|
get indexes of the largest `2` values from a list `a` using itemgetter
|
zip(*sorted(enumerate(a), key=operator.itemgetter(1)))[0][-2:]
|
13,070,461 |
Get index of the top n values of a list in python
|
get the indexes of the largest `2` values from a list of integers `a`
|
sorted(list(range(len(a))), key=lambda i: a[i], reverse=True)[:2]
|
14,538,885 |
How to get the index with the key in Python dictionary?
|
get index of key 'c' in dictionary `x`
|
list(x.keys()).index('c')
|
8,337,004 |
How to print +1 in Python, as +1 (with plus sign) instead of 1?
|
Print +1 using format '{0:+d}'
|
print('{0:+d}'.format(score))
|
3,460,161 |
Remove adjacent duplicate elements from a list
|
remove adjacent duplicate elements from a list `[1, 2, 2, 3, 2, 2, 4]`
|
[k for k, g in itertools.groupby([1, 2, 2, 3, 2, 2, 4])]
|
2,168,123 |
Converting a String to List in Python
|
split string "0,1,2" based on delimiter ','
|
"""0,1,2""".split(',')
|
2,168,123 |
Converting a String to List in Python
|
convert the string '0,1,2' to a list of integers
|
[int(x) for x in '0,1,2'.split(',')]
|
6,586,310 |
Python: Convert list of key-value tuples into dictionary?
|
convert list of key-value tuples `[('A', 1), ('B', 2), ('C', 3)]` into dictionary
|
dict([('A', 1), ('B', 2), ('C', 3)])
|
3,685,265 |
How to write a multidimensional array to a text file?
|
save numpy array `x` into text file 'test.txt'
|
np.savetxt('test.txt', x)
|
19,267,591 |
How to store os.system() output in a variable or a list in python
|
store the output of command 'ls' in variable `direct_output`
|
direct_output = subprocess.check_output('ls', shell=True)
|
32,032,836 |
Select everything but a list of columns from pandas dataframe
|
get all column name of dataframe `df` except for column 'T1_V6'
|
df[df.columns - ['T1_V6']]
|
9,560,207 |
How to count values in a certain range in a Numpy array?
|
get count of values in numpy array `a` that are between values `25` and `100`
|
((25 < a) & (a < 100)).sum()
|
8,380,389 |
how to get day name in datetime in python
|
Get day name from a datetime object
|
date.today().strftime('%A')
|
15,863,066 |
Python regular expression match whole word
| null |
re.search('\\bis\\b', your_string)
|
4,830,535 |
Python: How do I format a date in Jinja2?
|
Jinja parse datetime object `car.date_of_manufacture` to use format pattern `datetime`
|
{{car.date_of_manufacture | datetime}}
|
4,830,535 |
Python: How do I format a date in Jinja2?
|
Get the date object `date_of_manufacture` of object `car` in string format '%Y-%m-%d'
|
{{car.date_of_manufacture.strftime('%Y-%m-%d')}}
|
952,914 |
Making a flat list out of list of lists
|
make a flat list from list of lists `sublist`
|
[item for sublist in l for item in sublist]
|
952,914 |
Making a flat list out of list of lists
|
make a flat list from list of lists `list2d`
|
list(itertools.chain(*list2d))
|
952,914 |
Making a flat list out of list of lists
|
make a flat list from list of lists `list2d`
|
list(itertools.chain.from_iterable(list2d))
|
3,673,428 |
Convert int to ASCII and back in Python
|
convert ascii value 'a' to int
|
ord('a')
|
3,984,539 |
Python: use regular expression to remove the white space from all lines
|
replace white spaces in string ' a\n b\n c\nd e' with empty string ''
|
re.sub('(?m)^[^\\S\\n]+', '', ' a\n b\n c\nd e')
|
3,984,539 |
Python: use regular expression to remove the white space from all lines
|
remove white spaces from all the lines using a regular expression in string 'a\n b\n c'
|
re.sub('(?m)^\\s+', '', 'a\n b\n c')
|
19,300,174 |
Python: Assign each element of a List to a separate Variable
|
destruct elements of list `[1, 2, 3]` to variables `a`, `b` and `c`
|
a, b, c = [1, 2, 3]
|
13,368,723 |
Python split a list into subsets based on pattern
|
split list `mylist` into a list of lists whose elements have the same first five characters
|
[list(v) for k, v in itertools.groupby(mylist, key=lambda x: x[:5])]
|
37,584,492 |
Regular expression substitution in Python
|
remove all instances of parenthesesis containing text beginning with `as ` from string `line`
|
line = re.sub('\\(+as .*?\\) ', '', line)
|
17,027,690 |
How to skip the extra newline while printing lines read from a file?
|
skip the newline while printing `line`
|
print(line.rstrip('\n'))
|
18,358,938 |
Get index values of Pandas DataFrame as list?
|
get index values of pandas dataframe `df` as list
|
df.index.values.tolist()
|
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