question_id
int64
104k
42.1M
parent_answer_post_id
int64
104k
42.1M
prob
float64
0.23
0.87
snippet
stringlengths
7
76
intent
stringlengths
19
108
id
stringlengths
15
19
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stringlengths
27
199
34,705,205
34,705,233
0.869
sorted(l, key=lambda x: (-int(x[1]), x[0]))
Sort a nested list by two elements
34705205_34705233_0
Sort a list l of tuples. Each tuple has 2 elements, and the sorting is done with respect to the second one and from the greatest to the lowest value.
13,905,936
13,905,946
0.85267
[int(x) for x in str(num)]
converting integer to list in python
13905936_13905946_0
convert an integer num into a list of string digits
13,837,848
13,838,041
0.852143
c.decode('unicode_escape')
Converting byte string in unicode string
13837848_13838041_0
convert a byte string c into an unicode string
861,190
861,238
0.815429
mylist.sort(key=lambda d: (d['weight'], d['factor']))
Ordering a list of dictionaries in python
861190_861238_0
sort a list of dictionaries with respect to the keys 'weigth' and 'factor'.
33,361,446
33,361,777
0.807073
print([l[i:i + n] for i in range(len(l)) for n in range(1, len(l) - i + 1)])
Two Combination Lists from One List
33361446_33361777_0
print a list of all the sublists of a list l.
9,775,731
9,775,761
0.797127
max(min(my_value, max_value), min_value)
Clamping floating numbers in Python?
9775731_9775761_0
Return the value of a number my_value clipped between min_value and max_value
15,886,340
15,886,375
0.793709
re.sub('[^A-Z]', '', s)
How to extract all UPPER from a string? Python
15886340_15886375_0
regex to remove all the upper case characters in a string s
25,040,875
25,040,901
0.789484
[d['key'] for d in l]
Get a list of values from a list of dictionaries in python
25040875_25040901_0
For a list of dictionaries l, write a code snippet to return the list of values associated to the key 'key' for each of its element.
3,308,102
3,308,117
0.786179
[x[1] for x in elements]
How to extract the n-th elements from a list of tuples in python?
3308102_3308117_0
Extract the list of second elements from a list of tuples elements
652,291
652,347
0.775528
list.sort(key=lambda item: item['date'], reverse=True)
sorting a list of dictionary values by date in python
652291_652347_0
Reverse sort a list of dictionary list with respect to the value of the key 'date'.
4,111,412
4,111,417
0.77544
[i for i, e in enumerate(a) if e != 0]
How do I get a list of indices of non zero elements in a list?
4111412_4111417_0
Get the list of indices of non zero elements in the list a
4,287,209
4,287,233
0.774941
sorted(the_list, key=lambda x: int(x.split('_')[1]))
Sort list of strings by integer suffix in python
4287209_4287233_0
Sort a list of strings the_list with respect to the value of the suffix after the character '_'
41,067,960
41,067,989
0.739221
r = int(''.join(map(str, x)))
How to convert a list of multiple integers into a single integer?
41067960_41067989_0
Convert a list of integers x into a string r
34,962,104
34,962,199
0.735729
df['a'] = df['a'].apply(lambda x: x + 1)
Pandas: How can I use the apply() function for a single column?
34962104_34962199_0
Use the function apply to increment the values of the column 'a' of a pandas DataFrame df
3,494,906
3,495,395
0.73437
{k: v for d in L for k, v in list(d.items())}
How do I merge a list of dicts into a single dict?
3494906_3495395_0
Merge a list of dictionaries L into a single dictionary
12,814,667
12,814,719
0.733883
a.sort(key=lambda x: b.index(x))
How to sort a list according to another list?
12814667_12814719_0
Sort a list of elements a with respect to the index in a list b
7,996,940
7,997,011
0.732512
li1.sort(key=lambda x: not x.startswith('b.'))
What is the best way to sort list with custom sorting parameters in Python?
7996940_7997011_0
Sort a list of strings li1 such that those starting with 'b.' come first.
2,508,861
2,508,940
0.731841
int(num)
Python: Convert a string to an integer
2508861_2508940_0
convert a string num into an integer
1,386,811
1,386,828
0.728649
[int(s[i:i + 3], 2) for i in range(0, len(s), 3)]
Convert binary string to list of integers using Python
1386811_1386828_0
Given a binary string s, divide it into blocks of size 3 and return a list containing the decimal value corresponding to each block.
6,294,179
6,294,205
0.727966
indices = [i for i, x in enumerate(my_list) if x == 'whatever']
How to find all occurrences of an element in a list?
6294179_6294205_0
Given a list of string s, build the list of indices corresponding to the string 'whatever'.
16,772,071
16,772,088
0.726468
sorted(list(data.items()), key=lambda x: x[1])
sort dict by value python
16772071_16772088_0
Sort the items of the dictionary data by value
28,161,356
28,161,433
0.723997
df.sort_values(by='Date')
Sort Pandas Dataframe by Date
28161356_28161433_0
Sort a DataFrame df by the value of the column 'Date'
29,360,607
29,360,674
0.722502
print(' '.join(set(s)))
How does this function to remove duplicate characters from a string in python work?
29360607_29360674_0
print the string obtained by removing all the duplicate in a string s.
11,791,568
11,791,601
0.717945
[x for x in my_list if not x.startswith('#')]
What is the most pythonic way to exclude elements of a list that start with a specific character?
11791568_11791601_0
Remove the elements that start with '#' in the list my_list.
3,559,559
3,559,600
0.714482
newstr = oldstr.replace('M', '')
How to delete a character from a string using python?
3559559_3559600_0
Delete all the occurrence of the character 'M' in oldstr and store the result in the variable newstr.
4,880,960
4,880,971
0.701062
sum(d.values())
Sum of all values in a Python dict
4880960_4880971_0
Sum all the values of a python dict d
28,773,683
28,773,733
0.698927
pandas.concat([df1, df2], axis=1)
Combine two Pandas dataframes with the same index
28773683_28773733_0
Combine 2 pandas dataframes df1 and df2 with the same index.
35,582,959
35,582,986
0.698902
list(s)
How do I convert user input into a list?
35582959_35582986_0
Convert a string s into a list of characters.
1,094,717
1,094,721
0.698366
int(s.split('.')[0])
Convert a string to integer with decimal in Python
1094717_1094721_0
Convert a string s representing representing a decimal number to an integer.
2,191,699
2,191,712
0.697555
[(x, y) for x, y in a if x == 1]
Find an element in a list of tuples
2191699_2191712_0
Given a list of 2D tuples a, return the list of tuples for whom the first element is equal to 1.
6,890,170
6,890,255
0.696187
len(li) - 1 - li[::-1].index('a')
How to find the last occurrence of an item in a Python list
6890170_6890255_0
Find the index of the last occurrence of 'a' in the string li.
2,587,402
2,587,419
0.695257
xs.sort(key=lambda s: len(s))
Sorting Python list based on the length of the string
2587402_2587419_0
Sort a list of strings xs based on the length.
22,240,602
22,240,612
0.69463
len(set(mylist)) == 1
How do I check if all elements in a list are the same?
22240602_22240612_0
Check if all the elements of the list mylist are the same.
21,669,374
21,669,393
0.69411
hex(ord(c))
convert string to hex in python
21669374_21669393_0
Convert the char c into hex
22,749,706
22,749,723
0.692178
[len(x) for x in s.split()]
How to get the length of words in a sentence?
22749706_22749723_0
Get the length of each word in a sentence s
674,519
674,536
0.688835
[(k, v) for k, v in a.items()]
How can I convert a Python dictionary to a list of tuples?
674519_674536_0
Convert a Python dictionary a into a list of tuples
8,556,076
8,556,080
0.684711
my_list[-10:]
Python - How to extract the last x elements from a list
8556076_8556080_0
Extract the last 10 elements of the python list my_list
104,420
104,471
0.674376
itertools.permutations(s)
How to generate all permutations of a list in Python
104420_104471_0
Get all the permutations of a list s in python.
11,344,827
11,344,839
0.668318
sum(your_list)
Summing elements in a list
11344827_11344839_0
Sum elements of a list your_list
23,748,995
23,749,057
0.666899
df['a'].tolist()
Pandas DataFrame to list
23748995_23749057_0
Return the values of the column 'a' of the pandas DataFrame df into a list
42,125,131
42,125,197
0.664192
df.dropna(subset=['city', 'latitude', 'longitude'], how='all')
Delete row based on nulls in certain columns (pandas)
42125131_42125197_0
Delete null in the columns 'city', 'longitude' and 'latitude' of the dataframe df.
14,743,454
14,743,473
0.64028
[k for k, v in dictA.items() if v.count('duck') > 1]
Counting values in dictionary
14743454_14743473_0
Given a dictionary dictA return the list of keys whose values contain at least 2 occurrences of 'duck'
26,894,227
26,894,268
0.647453
sum(map(lambda x: x * x, l))
sum of squares in a list in one line?
26894227_26894268_0
Sum of squares in the list l
13,252,333
13,252,348
0.626962
all(isinstance(x, int) for x in lst)
Python check if all elements of a list are the same type
13252333_13252348_1
Check if all elements of a list lst are of type int.
4,843,173
4,843,178
0.616813
isinstance(s, str)
How to check if type of a variable is string?
4843173_4843178_0
Check if a variable s is a string.
5,864,485
5,864,507
0.614176
mystring.split(',')
How can I split this comma-delimited string in Python?
5864485_5864507_0
Split the string mystring by comma
18,256,363
18,256,476
0.613056
f = open('example.txt', 'r')
How do I print the content of a .txt file in Python?
18256363_18256476_1
Read a .txt file example.txt and store it into the variable f
32,490,629
32,490,661
0.749688
datetime.datetime.today().strftime('%Y-%m-%d')
Getting today's date in YYYY-MM-DD in Python?
32490629_32490661_0
Getting today's date in YYYY-MM-DD in Python with datetime
19,779,790
19,779,811
0.739086
datetime.datetime.now() - datetime.timedelta(days=1)
How to get yesterday in python
19779790_19779811_0
How to get yesterday's data in python with datetime?
521,502
521,510
0.729452
instance.__class__.__name__
How to get the concrete class name as a string?
521502_521510_0
Given an object named instance of a given class, get the class name as a string
3,428,769
3,428,785
0.704297
max(abs(x - y) for x, y in zip(values[1:], values[:-1]))
Finding the largest delta between two integers in a list in python
3428769_3428785_0
Find the largest delta between two integers in the list values in python
18,574,108
18,579,083
0.702526
df.to_xml('foo.xml')
How do convert a pandas/dataframe to XML?
18574108_18579083_0
Save the content of the pandas dataframe df into a file 'foo.xml'.
3,739,909
3,739,939
0.651989
s.replace(' ', '')
How to strip all whitespace from string
3739909_3739939_0
Strip all whitespace from a string s
5,245,058
5,245,216
0.648501
[line for line in open('text.txt') if 'apple' in line]
Python: Filter lines from a text file which contain a particular word
5245058_5245216_0
read the file 'text.txt' and store all the lines which contain the word 'apple' in a list.
28,538,536
37,069,701
0.635862
df.drop(['col1', 'col2'], axis=1, inplace=True)
Deleting mulitple columns in Pandas
28538536_37069701_0
Delete columns 'col1' and 'col2' from pandas dataframe df.
3,419,082
3,419,189
0.61457
np.savetxt('test.txt', data)
Write multiple numpy arrays to file
3419082_3419189_0
Save the numpy array data into a file 'test.txt'.
15,752,422
15,752,582
0.605945
df.set_index('month')
Python Pandas - Date Column to Column index
15752422_15752582_0
Find common elements to 2 lists x and y.
38,708,621
38,709,042
0.589873
np.isnan(a).sum()
How to calculate percentage of sparsity for a numpy array/matrix?
38708621_38709042_0
Find the number of NaN values in a numpy array a.
2,759,323
2,759,331
0.586185
os.listdir(path)
How can I list the contents of a directory in Python?
2759323_2759331_0
List the content of a directory given its path path.
6,490,560
6,490,586
0.50547
a = a[-1:] + a[:-1]
How do I move the last item in a list to the front in python?
6490560_6490586_0
Move the last item of the list a to the front in python
11,764,260
11,764,285
0.62482
arr[arr != 0].min()
How to find the minimum value in a numpy matrix?
11764260_11764285_0
Minimum non zero element in the numpy matrix arr
12,791,501
12,791,510
0.618933
x = [[] for i in range(3)]
Python initializing a list of lists
12791501_12791510_0
Create an list of 3 empty lists and store it in the variable x
14,352,621
14,352,657
0.450046
set(a).intersection(b)
compare if an element exists in two lists
14352621_14352657_0
Find the set of elements that are common to two lists a and b
32,030,343
32,030,456
0.432476
Y = X - X.mean(axis=1).reshape(-1, 1)
subtracting the mean of each row in numpy with broadcasting
32030343_32030456_0
Subtract the mean of each row from a numpy array X with broadcasting and store the result in a matrix Y.
15,715,912
15,716,103
0.431923
del l[-n:]
Remove the last N elements of a list
15715912_15716103_0
Delete the last n elements of a list l
6,490,560
6,490,608
0.428106
a.insert(0, a.pop())
How do I move the last item in a list to the front in python?
6490560_6490608_0
Given a python list a, move its last item to the front.
2,294,493
2,294,510
0.364759
s.find('r')
How to get the position of a character in Python?
2294493_2294510_0
Find the position of the character 'r' in the string s.
4,945,548
4,945,558
0.355587
print(s[1:])
Remove the first character of a string
4945548_4945558_0
print the string s but ommit the first character.
9,595,135
9,595,161
0.354152
math.sqrt(x)
How to calc square root in python?
9595135_9595161_0
compute the square root of x by using the module math.
12,491,537
12,491,575
0.339451
[s[i:i + 2] for i in range(0, len(s), 2)]
Splitting a string into 2-letter segments
12491537_12491575_0
Split the string s into a list of 2-letter segments with contiguous letters.
3,392,354
31,972,583
0.329498
a = set()
python: append values to a set
3392354_31972583_1
Create a variable a and initialize it as an empty set.
1,724,473
1,724,485
0.314704
chr(ord('a') + i)
How could I print out the nth letter of the alphabet in Python?
1724473_1724485_0
Given an index i such that 0 <= i < 26, how to find the letter of the alphabet with that index?
16,202,348
16,202,486
0.305187
e / e.sum(axis=1, keepdims=True)
numpy divide row by row sum
16202348_16202486_0
Divide each row of a numpy array e by the row's sum.
448,837
448,901
0.305181
print('Hello, world!')
How do I create a webpage with buttons that invoke various Python scripts on the system serving the webpage?
448837_448901_0
Print 'Hello, world' in python.
6,789,927
9,262,736
0.288494
numpy.linalg.lstsq(a, b)
Is there a python module to solve linear equations?
6789927_9262736_0
Use numpy to computes the vector x that solves the equation ax = b
11,125,429
11,125,452
0.288242
a.shape
size of NumPy array
11125429_11125452_0
Get the shape of a numpy array a.
9,819,602
9,819,617
0.287713
dict(y, **x)
Union of dict objects in Python
9819602_9819617_1
Merge 2 dictionnaries x and y.
40,034,993
40,035,266
0.280603
np.multiply(a, b)
How to get element-wise matrix multiplication (Hadamard product) in numpy?
40034993_40035266_1
Write the element-wise matrix multiplication (Hadamard product) of 2 numpy arrays a and b.
2,050,637
2,050,649
0.276625
(s + mystring for s in mylist)
Appending the same string to a list of strings in Python
2050637_2050649_1
Given a list of strings stored as the variable mylist, append to each of its element the string mystring.
14,471,177
14,471,204
0.264702
s[-1].isdigit()
Python - Check if the last characters in a string are numbers
14471177_14471204_0
Check is the last element of the string s is a digit.
6,444,548
34,704,661
0.264574
width, height = img.size
How do I get the picture size with PIL?
6444548_34704661_1
Get the width and the height of the image image with the help of PIL.
20,309,255
20,309,271
0.262348
name += ' ' * (length - len(name))
How to pad a string to a fixed length with spaces in Python?
20309255_20309271_0
Pad the string name to length with spaces in Python.
12,555,443
12,555,492
0.230541
def square(arr): return [(i ** 2) for i in arr]
Squaring all elements in a list
12555443_12555492_2
Write a function square_list which takes a list arr as argument and return the list obtained by squaring each of its elements.
473,099
473,108
0.229305
try : my_dict[k] += 1 except : my_dict[k] = 1
Check if a given key already exists in a dictionary and increment it
473099_473108_0
Given a dictionary my_dict, increment of the value of the key k if it exists. Otherwise set it to 1.
6,072,470
6,072,496
0.229009
d = dict(l)
Creating a Dictionary from a List of 2-Tuples
6072470_6072496_0
Create a dictionary d from a list of 2-Tuples l.
14,661,051
14,661,482
0.239257
json.dumps(my_dict)
Convert Python dictionary to JSON array
14661051_14661482_1
Convert the python dictionary my_dict to a JSON array.
20,297,332
20,297,639
0.250113
len(df.columns)
Python pandas dataframe: retrieve number of columns
20297332_20297639_0
Get the number of columns of a pandas dataframe df.
32,109,319
32,109,519
0.310411
(np.abs(x) + x) / 2
How to implement the ReLU function in Numpy
32109319_32109519_0
How to compute ReLU(x) where x is a numpy array?
40,587,251
40,587,319
0.713835
scipy.sparse.csr_matrix([column['rating'], column['user'], column['movie']])
How to create a ratings csr_matrix in scipy?
40587251_40587319_0
You are given a pandas dataframe column. Use scipy to build a csr_matrix out of the columns 'rating', 'user' and 'movie'.
1,456,617
1,456,645
0.709862
print(random.choice(words))
Return a random word from a word list in python
1456617_1456645_0
Given a list of string words, choose randomly one of them by using the module random in python.
27,905,295
27,905,350
0.709486
df.fillna(method='ffill', inplace=True)
How to replace NaNs by preceding values in pandas DataFrame?
27905295_27905350_0
Replace NaNs in the pandas dataframe df by using preceding values. Do it in place.
18,574,108
18,579,083
0.702526
df.to_xml('foo.xml')
How do convert a pandas/dataframe to XML?
18574108_18579083_0
Save the pandas dataframe df in a xml file 'foo.xml'.
14,688,391
14,693,358
0.675455
X_train = scaler.fit(X_train).transform(X_train)
How to apply standardization to SVMs in scikit-learn?
14688391_14693358_0
With scikit-learn you have an variable scaler that is a StandardScaler, used it to apply standardization to the matrix X_train.
23,748,995
23,749,057
0.666899
df['a'].tolist()
Pandas DataFrame to list
23748995_23749057_0
Convert the column 'a' of the pandas dataframe df to a python list.
41,821,112
41,821,169
0.665838
sum(x * y for x, y in list(zip(a, b)))
How can I sum the product of two list items using for loop in python?
41821112_41821169_0
Sum the product of 2 list items x and y which have the same length.
5,349,570
5,349,616
0.479303
numpy.prod(a)
How can I get the product of all elements in a one dimensional numpy array
5349570_5349616_0
Get the product of all elements in a one dimensional numpy array a.
5,228,383
5,228,392
0.479089
dist = sqrt((x2 - x1) ** 2 + (y2 - y1) ** 2)
How do I find the distance between two points?
5228383_5228392_0
You have 2 points (x1, y1) and (x2, y2) in 2D, compute the distance between them.
12,246,680
12,246,720
0.424306
np.hstack([X, Y])
joining two numpy matrices
12246680_12246720_0
Merge two numpy arrays X and Y horizontally.
20,459,536
20,459,839
0.397245
scipy.sparse.csr_matrix(df.values)
Convert Pandas dataframe to Sparse Numpy Matrix directly
20459536_20459839_0
Convert pandas dataframe df to scipy sparse matrix.
29,774,964
29,776,004
0.390449
max(n for n in range(1000) if str(n) == str(n)[::-1] and is_prime(n))
Max Prime Palindrome in Python
29774964_29776004_0
You are provided with a function is_prime which takes a number as input and return True if it is prime and False otherwise. Return the biggest number < 1000 which is a prime numnber and a palindrome.