question_id
int64 1.48k
42.8M
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stringlengths 11
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961,632 |
Converting integer to string
|
convert `a` to string
|
str(a)
|
5,201,191 |
Method to sort a list of lists?
|
sort list of lists `L` by the second item in each list
|
L.sort(key=operator.itemgetter(1))
|
9,969,684 |
How do I add space between two variables after a print in Python
|
Print variable `count` and variable `conv` with space string ' ' in between
|
print(str(count) + ' ' + str(conv))
|
38,457,059 |
Pandas changing cell values based on another cell
|
change NaN values in dataframe `df` using preceding values in the frame
|
df.fillna(method='ffill', inplace=True)
|
3,842,155 |
Is there a way to make the Tkinter text widget read only?
|
change the state of the Tkinter `Text` widget to read only i.e. `disabled`
|
text.config(state=DISABLED)
|
12,492,137 |
Python sum of ASCII values of all characters in a string
|
python sum of ascii values of all characters in a string `string`
|
sum(map(ord, string))
|
3,034,014 |
How to apply itertools.product to elements of a list of lists?
|
apply itertools.product to elements of a list of lists `arrays`
|
list(itertools.product(*arrays))
|
1,823,058 |
print number with commas as thousands separators
|
print number `value` as thousands separators
|
'{:,}'.format(value)
|
1,823,058 |
print number with commas as thousands separators
|
print number 1255000 as thousands separators
|
locale.setlocale(locale.LC_ALL, 'en_US')
locale.format('%d', 1255000, grouping=True)
|
39,988,589 |
How to pass through a list of queries to a pandas dataframe, and output the list of results?
|
get rows of dataframe `df` where column `Col1` has values `['men', 'rocks', 'mountains']`
|
df[df.Col1.isin(['men', 'rocks', 'mountains'])]
|
4,800,811 |
Accessing a value in a tuple that is in a list
|
get the value at index 1 for each tuple in the list of tuples `L`
|
[x[1] for x in L]
|
7,286,879 |
splitting unicode string into words
|
split unicode string "раз два три" into words
|
'\u0440\u0430\u0437 \u0434\u0432\u0430 \u0442\u0440\u0438'.split()
|
12,804,801 |
Django - How to sort queryset by number of character in a field
|
sort query set by number of characters in a field `length` in django model `MyModel`
|
MyModel.objects.extra(select={'length': 'Length(name)'}).order_by('length')
|
42,442,428 |
Python - Choose a dictionary in list which key is closer to a global value
|
get a dictionary in list `dicts` which key 'ratio' is closer to a global value 1.77672955975
|
min(dicts, key=lambda x: (abs(1.77672955975 - x['ratio']), -x['pixels']))
|
3,262,437 |
Finding missing values in a numpy array
|
get the non-masked values of array `m`
|
m[~m.mask]
|
13,840,883 |
Use of findall and parenthesis in Python
|
Find all words containing letters between A and Z in string `formula`
|
re.findall('\\b[A-Z]', formula)
|
6,667,201 |
How to define two-dimensional array in python
|
create a list `matrix` containing 5 lists, each of 5 items all set to 0
|
matrix = [([0] * 5) for i in range(5)]
|
18,253,210 |
Creating a numpy array of 3D coordinates from three 1D arrays
|
creating a numpy array of 3d coordinates from three 1d arrays `x_p`, `y_p` and `z_p`
|
np.vstack(np.meshgrid(x_p, y_p, z_p)).reshape(3, -1).T
|
11,764,260 |
How to find the minimum value in a numpy matrix?
|
find the minimum value in a numpy array `arr` excluding 0
|
arr[arr != 0].min()
|
12,579,061 |
Python Selenium: Find object attributes using xpath
|
get the text of multiple elements found by xpath "//*[@type='submit']/@value"
|
browser.find_elements_by_xpath("//*[@type='submit']/@value").text
|
12,579,061 |
Python Selenium: Find object attributes using xpath
|
find all the values in attribute `value` for the tags whose `type` attribute is `submit` in selenium
|
browser.find_elements_by_xpath("//*[@type='submit']").get_attribute('value')
|
1,773,805 |
parse a YAML file
|
parse a YAML file "example.yaml"
|
with open('example.yaml', 'r') as stream:
try:
print((yaml.load(stream)))
except yaml.YAMLError as exc:
print(exc)
|
1,773,805 |
parse a YAML file
|
parse a YAML file "example.yaml"
|
with open('example.yaml') as stream:
try:
print((yaml.load(stream)))
except yaml.YAMLError as exc:
print(exc)
|
41,572,822 |
How to swap a group of column headings with their values in Pandas
|
Sort the values of the dataframe `df` and align the columns accordingly based on the obtained indices after np.argsort.
|
pd.DataFrame(df.columns[np.argsort(df.values)], df.index, np.unique(df.values))
|
32,490,629 |
Getting today's date in YYYY-MM-DD in Python?
|
Getting today's date in YYYY-MM-DD
|
datetime.datetime.today().strftime('%Y-%m-%d')
|
5,607,551 |
How to urlencode a querystring in Python?
|
urlencode a querystring 'string_of_characters_like_these:$#@=?%^Q^$' in python 2
|
urllib.parse.quote_plus('string_of_characters_like_these:$#@=?%^Q^$')
|
16,868,457 |
python sorting dictionary by length of values
|
sort a dictionary `d` by length of its values and print as string
|
print(' '.join(sorted(d, key=lambda k: len(d[k]), reverse=True)))
|
8,081,545 |
convert list of tuples to multiple lists in Python
|
convert tuple elements in list `[(1,2),(3,4),(5,6),]` into lists
|
map(list, zip(*[(1, 2), (3, 4), (5, 6)]))
|
8,081,545 |
convert list of tuples to multiple lists in Python
| null |
map(list, zip(*[(1, 2), (3, 4), (5, 6)]))
|
8,081,545 |
convert list of tuples to multiple lists in Python
| null |
zip(*[(1, 2), (3, 4), (5, 6)])
|
38,251,245 |
Create a list of tuples with adjacent list elements if a condition is true
|
create a list of tuples which contains number 9 and the number before it, for each occurrence of 9 in the list 'myList'
|
[(x, y) for x, y in zip(myList, myList[1:]) if y == 9]
|
29,983,106 |
How can i set proxy with authentication in selenium chrome web driver using python
|
navigate to webpage given by url `http://www.python.org` using Selenium
|
driver.get('http://www.google.com.br')
|
34,015,615 |
Python reversing an UTF-8 string
|
reverse a UTF-8 string 'a'
|
b = a.decode('utf8')[::-1].encode('utf8')
|
3,276,180 |
Extracting date from a string in Python
|
extract date from a string 'monkey 2010-07-32 love banana'
|
dparser.parse('monkey 2010-07-32 love banana', fuzzy=True)
|
3,276,180 |
Extracting date from a string in Python
|
extract date from a string 'monkey 20/01/1980 love banana'
|
dparser.parse('monkey 20/01/1980 love banana', fuzzy=True)
|
3,276,180 |
Extracting date from a string in Python
|
extract date from a string `monkey 10/01/1980 love banana`
|
dparser.parse('monkey 10/01/1980 love banana', fuzzy=True)
|
16,374,540 |
Efficient way to convert a list to dictionary
|
Convert a list `['A:1', 'B:2', 'C:3', 'D:4']` to dictionary
|
dict(map(lambda s: s.split(':'), ['A:1', 'B:2', 'C:3', 'D:4']))
|
9,072,844 |
How can I check if a string contains ANY letters from the alphabet?
|
check if string `the_string` contains any upper or lower-case ASCII letters
|
re.search('[a-zA-Z]', the_string)
|
10,373,660 |
Converting a Pandas GroupBy object to DataFrame
|
convert a pandas `df1` groupby object to dataframe
|
DataFrame({'count': df1.groupby(['Name', 'City']).size()}).reset_index()
|
1,249,388 |
Removing all non-numeric characters from string in Python
|
remove all non-numeric characters from string `sdkjh987978asd098as0980a98sd `
|
re.sub('[^0-9]', '', 'sdkjh987978asd098as0980a98sd')
|
15,474,933 |
List comprehension with if statement
|
get items from list `a` that don't appear in list `b`
|
[y for y in a if y not in b]
|
40,987,319 |
How to subset a dataset in pandas dataframe?
|
extract the first four rows of the column `ID` from a pandas dataframe `df`
|
df.groupby('ID').head(4)
|
12,974,474 |
How to unzip a list of tuples into individual lists?
|
Unzip a list of tuples `l` into a list of lists
|
zip(*l)
|
7,271,385 |
How do I combine two lists into a dictionary in Python?
|
combine two lists `[1, 2, 3, 4]` and `['a', 'b', 'c', 'd']` into a dictionary
|
dict(zip([1, 2, 3, 4], ['a', 'b', 'c', 'd']))
|
7,271,385 |
How do I combine two lists into a dictionary in Python?
|
combine two lists `[1, 2, 3, 4]` and `['a', 'b', 'c', 'd']` into a dictionary
|
dict(zip([1, 2, 3, 4], ['a', 'b', 'c', 'd']))
|
15,974,730 |
How do I get the different parts of a Flask request's url?
|
retrieve the path from a Flask request
|
request.url
|
11,755,208 |
How to remove ^M from a text file and replace it with the next line
|
replace carriage return in string `somestring` with empty string ''
|
somestring.replace('\\r', '')
|
715,550 |
Best way to encode tuples with json
|
serialize dictionary `d` as a JSON formatted string with each key formatted to pattern '%d,%d'
|
simplejson.dumps(dict([('%d,%d' % k, v) for k, v in list(d.items())]))
|
466,345 |
Converting string into datetime
|
parse string "Jun 1 2005 1:33PM" into datetime by format "%b %d %Y %I:%M%p"
|
datetime.strptime('Jun 1 2005 1:33PM', '%b %d %Y %I:%M%p')
|
466,345 |
Converting string into datetime
|
parse string "Aug 28 1999 12:00AM" into datetime
|
parser.parse('Aug 28 1999 12:00AM')
|
17,057,544 |
Python - Extract folder path from file path
|
Get absolute folder path and filename for file `existGDBPath `
|
os.path.split(os.path.abspath(existGDBPath))
|
17,057,544 |
Python - Extract folder path from file path
|
extract folder path from file path
|
os.path.dirname(os.path.abspath(existGDBPath))
|
9,733,638 |
Post JSON using Python Requests
|
Execute a post request to url `http://httpbin.org/post` with json data `{'test': 'cheers'}`
|
requests.post('http://httpbin.org/post', json={'test': 'cheers'})
|
42,260,840 |
Python - Remove dictionary from list if key is equal to value
|
remove dictionary from list `a` if the value associated with its key 'link' is in list `b`
|
a = [x for x in a if x['link'] not in b]
|
9,647,586 |
Getting a request parameter in Jinja2
|
get a request parameter `a` in jinja2
|
{{request.args.get('a')}}
|
18,265,935 |
Python - Create list with numbers between 2 values?
|
create a list of integers between 2 values `11` and `17`
|
list(range(11, 17))
|
40,707,158 |
type conversion in python from int to float
|
Change data type of data in column 'grade' of dataframe `data_df` into float and then to int
|
data_df['grade'] = data_df['grade'].astype(float).astype(int)
|
4,800,419 |
Sorting or Finding Max Value by the second element in a nested list. Python
|
Find the list in a list of lists `alkaline_earth_values` with the max value of the second element.
|
max(alkaline_earth_values, key=lambda x: x[1])
|
13,142,347 |
How to remove leading and trailing zeros in a string? Python
|
remove leading and trailing zeros in the string 'your_Strip'
|
your_string.strip('0')
|
14,169,122 |
Generating all unique pair permutations
|
generate a list of all unique pairs of integers in `range(9)`
|
list(permutations(list(range(9)), 2))
|
587,345 |
Python regular expression matching a multiline block of text
|
create a regular expression that matches the pattern '^(.+)(?:\\n|\\r\\n?)((?:(?:\\n|\\r\\n?).+)+)' over multiple lines of text
|
re.compile('^(.+)(?:\\n|\\r\\n?)((?:(?:\\n|\\r\\n?).+)+)', re.MULTILINE)
|
587,345 |
Python regular expression matching a multiline block of text
|
regular expression "^(.+)\\n((?:\\n.+)+)" matching a multiline block of text
|
re.compile('^(.+)\\n((?:\\n.+)+)', re.MULTILINE)
|
33,218,968 |
How do you call a python file that requires a command line argument from within another python file?
|
Run 'test2.py' file with python location 'path/to/python' and arguments 'neededArgumetGoHere' as a subprocess
|
call(['path/to/python', 'test2.py', 'neededArgumetGoHere'])
|
1,683,775 |
Sort a multidimensional list by a variable number of keys
|
sort a multidimensional list `a` by second and third column
|
a.sort(key=operator.itemgetter(2, 3))
|
3,523,048 |
Add another tuple to a tuple
|
Add a tuple with value `another_choice` to a tuple `my_choices`
|
final_choices = ((another_choice,) + my_choices)
|
3,523,048 |
Add another tuple to a tuple
|
Add a tuple with value `another_choice` to a tuple `my_choices`
|
final_choices = ((another_choice,) + my_choices)
|
5,137,497 |
Find current directory and file's directory
|
find the current directory
|
os.getcwd()
|
5,137,497 |
Find current directory and file's directory
|
find the current directory
|
os.path.realpath(__file__)
|
5,137,497 |
Find current directory and file's directory
|
get the directory name of `path`
|
os.path.dirname(path)
|
5,137,497 |
Find current directory and file's directory
|
get the canonical path of file `path`
|
os.path.realpath(path)
|
5,137,497 |
Find current directory
|
Find name of current directory
|
dir_path = os.path.dirname(os.path.realpath(__file__))
|
5,137,497 |
Find current directory
|
Find current directory
|
cwd = os.getcwd()
|
5,137,497 |
Find current directory
|
Find the full path of current directory
|
full_path = os.path.realpath(__file__)
|
10,078,470 |
Sort numpy matrix row values in ascending order
|
sort array `arr` in ascending order by values of the 3rd column
|
arr[arr[:, (2)].argsort()]
|
10,078,470 |
Sort numpy matrix row values in ascending order
|
sort rows of numpy matrix `arr` in ascending order according to all column values
|
numpy.sort(arr, axis=0)
|
373,459 |
split string on a number of different characters
|
split string 'a b.c' on space " " and dot character "."
|
re.split('[ .]', 'a b.c')
|
36,875,258 |
copying one file's contents to another in python
|
copy the content of file 'file.txt' to file 'file2.txt'
|
shutil.copy('file.txt', 'file2.txt')
|
18,319,101 |
What's the best way to generate random strings of a specific length in Python?
|
generate random upper-case ascii string of 12 characters length
|
print(''.join(choice(ascii_uppercase) for i in range(12)))
|
39,646,401 |
How to merge the elements in a list sequentially in python
|
merge the elements in a list `lst` sequentially
|
[''.join(seq) for seq in zip(lst, lst[1:])]
|
19,758,364 |
python: rename single column header in pandas dataframe
|
rename column 'gdp' in dataframe `data` to 'log(gdp)'
|
data.rename(columns={'gdp': 'log(gdp)'}, inplace=True)
|
14,694,482 |
Converting html to text with Python
|
convert a beautiful soup html `soup` to text
|
print(soup.get_text())
|
18,142,090 |
python: sort a list of lists by an item in the sublist
|
Sort list `li` in descending order based on the second element of each list inside list`li`
|
sorted(li, key=operator.itemgetter(1), reverse=True)
|
31,888,871 |
Pandas - replacing column values
|
replace value 0 with 'Female' and value 1 with 'Male' in column 'sex' of dataframe `data`
|
data['sex'].replace([0, 1], ['Female', 'Male'], inplace=True)
|
19,894,478 |
Regex punctuation split [Python]
|
split string 'Words, words, words.' on punctuation
|
re.split('\\W+', 'Words, words, words.')
|
3,329,386 |
Limit the number of sentences in a string
|
Extract first two substrings in string `phrase` that end in `.`, `?` or `!`
|
re.match('(.*?[.?!](?:\\s+.*?[.?!]){0,1})', phrase).group(1)
|
9,505,526 |
Split string into strings of repeating elements
|
split string `s` into strings of repeating elements
|
print([a for a, b in re.findall('((\\w)\\2*)', s)])
|
29,360,607 |
How does this function to remove duplicate characters from a string in python work?
|
Create new string with unique characters from `s` seperated by ' '
|
print(' '.join(OrderedDict.fromkeys(s)))
|
29,360,607 |
How does this function to remove duplicate characters from a string in python work?
|
create a set from string `s` to remove duplicate characters
|
print(' '.join(set(s)))
|
6,510,477 |
How can i list only the folders in zip archive in Python?
|
list folders in zip file 'file' that ends with '/'
|
[x for x in file.namelist() if x.endswith('/')]
|
11,300,383 |
How to find the count of a word in a string?
|
find the count of a word 'Hello' in a string `input_string`
|
input_string.count('Hello')
|
27,436,748 |
Python: reduce (list of strings) -> string
|
reduce the first element of list of strings `data` to a string, separated by '.'
|
print('.'.join([item[0] for item in data]))
|
14,332,141 |
Dumping subprcess output in a file in append mode
|
Move the cursor of file pointer `fh1` at the end of the file.
|
fh1.seek(2)
|
15,852,295 |
list of ints into a list of tuples python
|
convert a flat list into a list of tuples of every two items in the list, in order
|
print(zip(my_list[0::2], my_list[1::2]))
|
15,852,295 |
list of ints into a list of tuples python
|
group a list of ints into a list of tuples of each 2 elements
|
my_new_list = zip(my_list[0::2], my_list[1::2])
|
21,129,020 |
How to fix: "UnicodeDecodeError: 'ascii' codec can't decode byte"
|
set the default encoding to 'utf-8'
|
sys.setdefaultencoding('utf8')
|
7,999,935 |
Python datetime to string without microsecond component
|
Formate current date and time to a string using pattern '%Y-%m-%d %H:%M:%S'
|
datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')
|
36,661,837 |
How to retrieve only arabic texts from a string using regular expression?
|
retrieve arabic texts from string `my_string`
|
print(re.findall('[\\u0600-\\u06FF]+', my_string))
|
11,073,609 |
How to group DataFrame by a period of time?
|
group dataframe `df` based on minute interval
|
df.groupby(df.index.map(lambda t: t.minute))
|
5,404,665 |
Accessing elements of python dictionary
|
access value associated with key 'American' of key 'Apple' from dictionary `dict`
|
dict['Apple']['American']
|
14,991,195 |
How to remove rows with null values from kth column onward in python
|
remove all null values from columns 'three', 'four' and 'five' of dataframe `df2`
|
df2.dropna(subset=['three', 'four', 'five'], how='all')
|
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