Datasets:

neulab

/

conala

like 55

Splitting string and removing whitespace Python

Split string with comma (,) and remove whitespace from a string 'my_string'

[item.strip() for item in my_string.split(',')]

Get all object attributes

Get all object attributes of object `obj`

print((obj.__dict__))

Get all object attributes

Get all object attributes of an object

dir()

Get all object attributes

Get all object attributes of an object

dir()

How to center a window with PyGObject

pygobject center window `window`

window.set_position(Gtk.WindowPosition.CENTER)

how to change the size of the sci notation above the y axis in matplotlib?

change the size of the sci notation to '30' above the y axis in matplotlib `plt`

plt.rc('font', **{'size': '30'})

Python pandas: check if any value is NaN in DataFrame

check if datafram `df` has any NaN vlaues

df.isnull().values.any()

Python - use list as function parameters

unpack the arguments out of list `params` to function `some_func`

some_func(*params)

How to decode encodeURIComponent in GAE (python)?

decode encodeuricomponent in GAE

urllib.parse.unquote(h.path.encode('utf-8')).decode('utf-8')

Percentage match in pandas Dataframe

get proportion of rows in dataframe `trace_df` whose values for column `ratio` are greater than 0

(trace_df['ratio'] > 0).mean()

How to convert a tuple to a string in Python?

convert a set of tuples `queryresult` to a string `emaillist`

emaillist = '\n'.join(item[0] for item in queryresult)

How to convert a tuple to a string in Python?

convert a set of tuples `queryresult` to a list of strings

[item[0] for item in queryresult]

How to convert a tuple to a string in Python?

convert a list of tuples `queryresult` to a string from the first indexes.

emaillist = '\n'.join([item[0] for item in queryresult])

Python get focused entry name

get the widget which has currently the focus in tkinter instance `window2`

print(('focus object class:', window2.focus_get().__class__))

How to declare an array in python

Initialize a list `a` with `10000` items and each item's value `0`

a = [0] * 10000

How can I remove duplicate words in a string with Python?

Keep only unique words in list of words `words` and join into string

print(' '.join(sorted(set(words), key=words.index)))

How to generate random numbers that are different?

generate 6 random numbers between 1 and 50

random.sample(range(1, 50), 6)

How to generate random numbers that are different?

generate six unique random numbers in the range of 1 to 49.

random.sample(range(1, 50), 6)

Dictionary to lowercase in Python

lowercase keys and values in dictionary `{'My Key': 'My Value'}`

{k.lower(): v.lower() for k, v in list({'My Key': 'My Value'}.items())}

Dictionary to lowercase in Python

lowercase all keys and values in dictionary `{'My Key': 'My Value'}`

dict((k.lower(), v) for k, v in {'My Key': 'My Value'}.items())

Dictionary to lowercase in Python

Convert each key,value pair in a dictionary `{'My Key': 'My Value'}` to lowercase

dict((k.lower(), v.lower()) for k, v in {'My Key': 'My Value'}.items())

sorting list of list in python

sorting the lists in list of lists `data`

[sorted(item) for item in data]

Is there a way to get a list of column names in sqlite?

SQLite get a list of column names from cursor object `cursor`

names = list(map(lambda x: x[0], cursor.description))

finding out absolute path to a file from python

get the absolute path of a running python script

os.path.abspath(__file__)

how to sort 2d array by row in python?

sort 2d array `matrix` by row with index 1

sorted(matrix, key=itemgetter(1))

Finding index of the same elements in a list

Get all indexes of a letter `e` from a string `word`

[index for index, letter in enumerate(word) if letter == 'e']

How to print container object with unicode-containing values?

decode utf-8 code `x` into a raw unicode literal

print(str(x).decode('raw_unicode_escape'))

Python regular expressions - how to capture multiple groups from a wildcard expression?

split string 'abcdefg' into a list of characters

re.findall('\\w', 'abcdefg')

check whether a file exists

check whether a file `fname` exists

os.path.isfile(fname)

check whether a file exists

check whether file "/path/to/file" exists

my_file = Path('/path/to/file') if my_file.is_file(): pass

check whether a file exists

check whether file `file_path` exists

os.path.exists(file_path)

check whether a file exists

check whether a file "/etc/password.txt" exists

print(os.path.isfile('/etc/password.txt'))

check whether a file exists

check whether a file "/etc" exists

print(os.path.isfile('/etc'))

check whether a file exists

check whether a path "/does/not/exist" exists

print(os.path.exists('/does/not/exist'))

check whether a file exists

check whether a file "/does/not/exist" exists

print(os.path.isfile('/does/not/exist'))

check whether a file exists

check whether a path "/etc" exists

print(os.path.exists('/etc'))

check whether a file exists

check whether a path "/etc/password.txt" exists

print(os.path.exists('/etc/password.txt'))

Split Strings with Multiple Delimiters?

split string "a;bcd,ef g" on delimiters ';' and ','

"""a;bcd,ef g""".replace(';', ' ').replace(',', ' ').split()

Why can you loop through an implicit tuple in a for loop, but not a comprehension in Python?

get a list each value `i` in the implicit tuple `range(3)`

list(i for i in range(3))

Pythonically add header to a csv file

add field names as headers in csv constructor `writer`

writer.writeheader()

How to flatten a tuple in python

flatten a tuple `l`

[(a, b, c) for a, (b, c) in l]

Python - how to convert int to string represent a 32bit Hex number

convert 3652458 to string represent a 32bit hex number

"""0x{0:08X}""".format(3652458)

How can I convert a Python dictionary to a list of tuples?

convert a python dictionary `d` to a list of tuples

[(v, k) for k, v in list(d.items())]

How can I convert a Python dictionary to a list of tuples?

convert dictionary of pairs `d` to a list of tuples

[(v, k) for k, v in d.items()]

How can I convert a Python dictionary to a list of tuples?

convert python 2 dictionary `a` to a list of tuples where the value is the first tuple element and the key is the second tuple element

[(v, k) for k, v in a.items()]

How can I convert a Python dictionary to a list of tuples?

convert a python dictionary 'a' to a list of tuples

[(k, v) for k, v in a.items()]

What's the easiest way to convert a list of hex byte strings to a list of hex integers?

convert a list of hex byte strings `['BB', 'A7', 'F6', '9E']` to a list of hex integers

[int(x, 16) for x in ['BB', 'A7', 'F6', '9E']]

What's the easiest way to convert a list of hex byte strings to a list of hex integers?

convert the elements of list `L` from hex byte strings to hex integers

[int(x, 16) for x in L]

Two values from one input in python?

assign values to two variables, `var1` and `var2` from user input response to `'Enter two numbers here: ` split on whitespace

var1, var2 = input('Enter two numbers here: ').split()

Django filter JSONField list of dicts

Filter a json from a key-value pair as `{'fixed_key_1': 'foo2'}` in Django

Test.objects.filter(actions__contains=[{'fixed_key_1': 'foo2'}])

Is there a cleaner way to iterate through all binary 4-tuples?

create a list containing a four elements long tuples of permutations of binary values

itertools.product(list(range(2)), repeat=4)

Python - Get Yesterday's date as a string in YYYY-MM-DD format

get yesterday's date as a string in `YYYY-MM-DD` format using timedelta

(datetime.now() - timedelta(1)).strftime('%Y-%m-%d')

Python 3: Multiply a vector by a matrix without NumPy

Get the dot product of matrix `[1,0,0,1,0,0]` and matrix `[[0,1],[1,1],[1,0],[1,0],[1,1],[0,1]]`

np.dot([1, 0, 0, 1, 0, 0], [[0, 1], [1, 1], [1, 0], [1, 0], [1, 1], [0, 1]])

Parse_dates in Pandas

convert date strings in pandas dataframe column`df['date']` to pandas timestamps using the format '%d%b%Y'

df['date'] = pd.to_datetime(df['date'], format='%d%b%Y')

Importing files from different folder

Importing file `file` from folder '/path/to/application/app/folder'

sys.path.insert(0, '/path/to/application/app/folder') import file

How can a pandas merge preserve order?

do a `left` merge of dataframes `x` and `y` on the column `state` and sort by `index`

x.reset_index().merge(y, how='left', on='state', sort=False).sort('index')

How can i create the empty json object in python

Create a default empty json object if no json is available in request parameter `mydata`

json.loads(request.POST.get('mydata', '{}'))

Slicing a list into a list of sub-lists

get a list of tuples of every three consecutive items in list `[1, 2, 3, 4, 5, 6, 7, 8, 9]`

list(zip(*((iter([1, 2, 3, 4, 5, 6, 7, 8, 9]),) * 3)))

Slicing a list into a list of sub-lists

slice list `[1, 2, 3, 4, 5, 6, 7]` into lists of two elements each

list(grouper(2, [1, 2, 3, 4, 5, 6, 7]))

Slicing a list into a list of sub-lists

[input[i:i + n] for i in range(0, len(input), n)]

Sorting numbers in string format with Python

Sort list `keys` based on its elements' dot-seperated numbers

keys.sort(key=lambda x: map(int, x.split('.')))

Sorting numbers in string format with Python

Sort a list of integers `keys` where each value is in string format

keys.sort(key=lambda x: [int(y) for y in x.split('.')])

numpy with python: convert 3d array to 2d

convert a 3d array `img` of dimensions 4x2x3 to a 2d array of dimensions 3x8

img.transpose(2, 0, 1).reshape(3, -1)

Replacing few values in a pandas dataframe column with another value

replacing 'ABC' and 'AB' values in column 'BrandName' of dataframe `df` with 'A'

df['BrandName'].replace(['ABC', 'AB'], 'A')

Replacing few values in a pandas dataframe column with another value

replace values `['ABC', 'AB']` in a column 'BrandName' of pandas dataframe `df` with another value 'A'

df['BrandName'] = df['BrandName'].replace(['ABC', 'AB'], 'A')

Pandas: Subtract row mean from each element in row

Subtract the mean of each row in dataframe `df` from the corresponding row's elements

df.sub(df.mean(axis=1), axis=0)

Python, remove all non-alphabet chars from string

remove all non-alphabet chars from string `s`

"""""".join([i for i in s if i.isalpha()])

How to split a string into integers in Python?

split a string `s` into integers

l = (int(x) for x in s.split())

How to split a string into integers in Python?

split a string `42 0` by white spaces.

"""42 0""".split()

How to split a string into integers in Python?

map(int, '42 0'.split())

Get the indexes of truthy elements of a boolean list as a list/tuple

get indexes of all true boolean values from a list `bool_list`

[i for i, elem in enumerate(bool_list, 1) if elem]

How to group pandas DataFrame entries by date in a non-unique column

group dataframe `data` entries by year value of the date in column 'date'

data.groupby(data['date'].map(lambda x: x.year))

Getting the indices of several elements in a NumPy array at once

Get the indices in array `b` of each element appearing in array `a`

np.in1d(b, a).nonzero()[0]

In Python, how to display current time in readable format

display current time in readable format

time.strftime('%l:%M%p %z on %b %d, %Y')

Rotate axis text in python matplotlib

rotate x-axis text labels of plot `ax` 45 degrees

ax.set_xticklabels(ax.xaxis.get_majorticklabels(), rotation=45)

How does python do string magic?

append array of strings `['x', 'x', 'x']` into one string

"""""".join(['x', 'x', 'x'])

Array indexing in numpy

retrieve all items in an numpy array 'x' except the item of the index 1

x[(np.arange(x.shape[0]) != 1), :, :]

How do I pull a recurring key from a JSON?

pull a value with key 'name' from a json object `item`

print(item['name'])

Read a File from redirected stdin with python

read a file from redirected stdin and save to variable `result`

result = sys.stdin.read()

How to get the content of a Html page in Python

Get all the texts without tags from beautiful soup object `soup`

"""""".join(soup.findAll(text=True))

Extracting all rows from pandas Dataframe that have certain value in a specific column

extract all rows from dataframe `data` where the value of column 'Value' is True

data[data['Value'] == True]

Removing duplicate characters from a string

removing duplicate characters from a string variable "foo"

"""""".join(set(foo))

how to sort by a computed value in django

sort objects in model `Profile` based on Theirs `reputation` attribute

sorted(Profile.objects.all(), key=lambda p: p.reputation)

python pandas flatten a dataframe to a list

flatten a dataframe df to a list

df.values.flatten()

how do I sort a python list of dictionaries given a list of ids with the desired order?

sort list `users` using values associated with key 'id' according to elements in list `order`

users.sort(key=lambda x: order.index(x['id']))

how do I sort a python list of dictionaries given a list of ids with the desired order?

sort a python list of dictionaries `users` by a given list `order` of ids 'id' with the desired order

users.sort(key=lambda x: order.index(x['id']))

Python requests library how to pass Authorization header with single token

request URI '<MY_URI>' and pass authorization token 'TOK:<MY_TOKEN>' to the header

r = requests.get('<MY_URI>', headers={'Authorization': 'TOK:<MY_TOKEN>'})

How do I un-escape a backslash-escaped string in python?

un-escape a backslash-escaped string in `Hello,\\nworld!`

print('"Hello,\\nworld!"'.decode('string_escape'))

Can I have a non-greedy regex with dotall?

match regex pattern 'a*?bc*?' on string 'aabcc' with DOTALL enabled

re.findall('a*?bc*?', 'aabcc', re.DOTALL)

python/numpy: how to get 2D array column length?

get second array column length of array `a`

a.shape[1]

Adding calculated column(s) to a dataframe in pandas

use operations like max/min within a row to a dataframe 'd' in pandas

d.apply(lambda row: min([row['A'], row['B']]) - row['C'], axis=1)

Count number of occurrences of a given substring in a string

count number of occurrences of a substring 'ab' in a string "abcdabcva"

"""abcdabcva""".count('ab')

Get a list of values from a list of dictionaries in python

get a list of values with key 'key' from a list of dictionaries `l`

[d['key'] for d in l if 'key' in d]

Get a list of values from a list of dictionaries in python

get a list of values for key 'key' from a list of dictionaries `l`

[d['key'] for d in l]

Get a list of values from a list of dictionaries in python

get a list of values for key "key" from a list of dictionaries in `l`

[d['key'] for d in l]

How to order a list of lists by the first value

order a list of lists `l1` by the first value

l1.sort(key=lambda x: int(x[0]))

How to order a list of lists by the first value

order a list of lists `[[1, 'mike'], [1, 'bob']]` by the first value of individual list

sorted([[1, 'mike'], [1, 'bob']])

case sensitive string replacement in Python

replace a string `Abc` in case sensitive way using maketrans

"""Abc""".translate(maketrans('abcABC', 'defDEF'))

python: dictionary to string, custom format?

dictionary `d` to string, custom format

"""<br/>""".join([('%s:: %s' % (key, value)) for key, value in list(d.items())])

how to write a unicode csv in Python 2.7

self.writer.writerow([str(s).encode('utf-8') for s in row])