# python weekly reports

1. Sort one list based on another Python - [10/4]
2. Weird bug in Pandas and Numpy regarding multithreading - [8/0]
3. Calculate percentage of similar values in pandas dataframe - [7/4]
4. How to find top N minimum values from the DataFrame, Python-3 - [7/2]
5. How do I group dataframe columns based on their sequence relation - [6/3]
6. How to remove duplicate digits from integers in list - [5/5]
7. Regex pattern recursively - in python - [5/4]
8. Permutations of a list with 16 integers but only if 4 conditions are fulfilled - [5/4]
9. Is there a way to persist decorators during inheritance? - [5/2]
10. How to get x axis labels in multiple line in matplotlib? - [5/2]

1. Why is f'{{{74}}}' the same as f'{{74}}' with f-Strings? - [73/1]
2. Finding longest overlapping ranges - [19/9]
3. Memory usage of Python base types (particulary int and float) - [7/2]
4. Given a list of numbers, find all matrices such that each column and row sum up to 264 - [7/2]
5. Finding smallest eigenvectors of large sparse matrix, over 100x slower in SciPy than in Octave - [7/1]
6. Pythonic way of ignoring the last element when doing set difference - [6/3]
7. Packing values into a tuple using *, just like function argument packing - [6/2]
8. Efficient way of looping through list of dictionaries and appending items into column in dataframe - [6/2]
9. Retrieving text body of answers and comments using Stackexchange API - [6/1]
10. combine two strings in python - [5/4]

1. Python __getitem__ and in operator result in strange behavior - [22/1]
2. What is the reason for difference between integer division and float to int conversion in python? - [18/1]
3. Match multiple(3+) occurrences of each character - [7/5]
4. Pandas Dataframe: Multiplying Two Columns - [7/3]
5. What does !r mean in Python? - [7/1]
6. python how to find the number of days in each month from Dec 2019 and forward between two date columns - [6/4]
7. Itertools zip_longest with first item of each sub-list as padding values in stead of None by default - [6/4]
8. Writing more than 50 millions from Pyspark df to PostgresSQL, best efficient approach - [6/0]
9. How to merge and groupby between seperate dataframes - [5/3]
10. Setting the index after merging with pandas? - [5/3]

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2019-11-30 17:26:36 GMT

1. Unstack and return value counts for each variable? - [11/5]
2. Pandas: How to create a column that indicates when a value is present in another column a set number of rows in advance? - [7/2]
3. How to generate all possible combinations with a given condition to make it more efficient? - [6/2]
4. How do I print values only when they appear more than once in a list in python - [6/2]
5. Reverse cumsum for countdown functionality in pandas? - [6/1]
6. How to convert multiple columns to single column? - [5/3]
7. Checking the type of relationship between columns in python/pandas? (one-to-one, one-to-many, or many-to-many) - [5/3]
8. Mean Square Displacement as a Function of Time in Python - [5/2]
9. Map dict lookup - [5/2]
10. How to hide row of a multiple column based on hided data values - [5/1]

1. Generate filtered binary cartesian products - [11/2]
2. numpy.unique gives wrong output for list of sets - [11/2]
3. For loop using more than one list in Python - [10/2]
4. Is there a better way to write nested if statements in python? - [8/7]
5. How to concatenate a list with a nested list? - [7/6]
6. How to make python halt once target product is found in subset? - [7/1]
7. Python - value unpacking order in method parameters - [7/1]
8. Incrementing the upper limit of range inside a loop doesn't make it run forever - [6/7]
9. Why doesn't [[]] == list(list()) - [6/4]
10. Filtering rows from dataframe based on the values of the previous rows - [6/2]

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2019-11-16 07:05:12 GMT

1. Joining elements of a list if those elements are in between two whitespaces - [14/4]
2. Fast alternative for numpy.median.reduceat - [9/4]
3. Python dictionary with multiple keys pointing to same list in memory efficient way - [7/4]
4. Strange performance results -- loop vs list comprehension and zip() - [7/2]
5. merge two dataframes and add column level with names - [7/1]
6. How to address 'OSError: libc not found' raised on Gunicorn exec of Flask app inside Alpine docker container - [6/5]
7. Transform multiple categorical columns - [6/3]
8. Handling very very small numbers in Python - [6/2]
9. python list + empty numpy array = empty numpy array? - [6/1]
10. How can I fix this pytorch error on Windows? (ModuleNotFoundError: No module named 'torch') - [6/1]

1. Why did dict.get(key) work but not dict[key]? - [15/3]
2. How can I use functional programming to make a generic method in python? - [8/1]
3. How is `var[:] = []` different from `var = []`? - [7/3]
4. dtypes muck things up when shifting on axis one (columns) - [7/2]
5. How to specify index of specific elements in every sublist of nested list? - [6/4]
6. How to remove substrings from a python list - [6/2]
7. How do I ensure that a generator gets properly closed? - [6/2]
8. Python multiprocessing: Running a process after its parent exited - [6/1]
9. Fast way to convert upper triangular matrix into symmetric matrix - [5/3]
10. What does "import" prefer - .pyd (.so) or .py? - [5/2]

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2019-11-03 09:41:24 GMT

1. Add new column to dataframe based on dictionary - [13/7]
2. How to check if python package is latest version programmatically? - [13/6]
3. Find symmetric pairs quickly in numpy - [9/6]
4. Finding specific characters within a list - [9/5]
5. GradienTape convergence much slower than Keras.model.fit - [8/1]
6. Pandas- Fill nans up until first non NULL value - [7/3]
7. Getting "bad escape" when using nltk in py3 - [7/1]
8. How to solve Absolute Value abs() objective with Python Gekko? - [6/2]
9. Infer which columns are datetime - [6/0]
10. Compare dicts and merge them. No overwrite and no duplicate values - [5/4]

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2019-10-27 06:20:02 GMT

1. Get overridden functions of subclass - [15/4]
2. numpy 1D array: mask elements that repeat more than n times - [14/8]
3. Tuple slicing not returning a new object as opposed to list slicing - [11/4]
4. Are there some a, b such that max(a, b) != max(b, a)? - [9/2]
5. I happen to stumble upon this code :" With for w in words:, the example would attempt to create an infinite list - [6/2]
6. Merge two data frames with the closest number into a single row using pandas? - [6/1]
7. How to fade the screen out and back in using PyGame? - [6/1]
8. How to create JPEG compressed DICOM dataset using pydicom? - [6/0]
9. Iterate through string and print distance between characters - [5/5]
10. split rows in pandas dataframe - [5/4]

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2019-10-19 19:07:13 GMT

1. Is there a more elegant way to express ((x == a and y == b) or (x == b and y == a))? - [59/8]
2. How to write 2**n - 1 as a recursive function? - [33/7]
3. Why does keras model predict slower after compile? - [14/2]
4. What is the meaning of __total__ dunder attribute in Python 3? - [12/1]
5. Identifying root parents and all their children in trees - [9/2]
6. How to turn %s into {0}, {1} ... less clunky? - [7/6]
7. What is the use for control characters in string.printable? - [7/5]
8. Is it an error to return a value in a finally clause - [7/3]
9. Why does setting a descriptor on a class overwrite the descriptor? - [7/2]
10. Getting a numpy array view with integer or boolean indexing - [6/2]

1. Why does b+=(4,) work and b = b + (4,) doesn't work when b is a list? - [61/6]
2. What exactly is meant by "partial function" in functional programming? - [19/3]
3. How do I remove 'None' items from the end of a list in Python - [13/3]
4. Fastest algorithm to find the largest palindrome that is the product of 2 numbers with the same number of digits - [7/3]
5. Problem with autocompletion with Pandas in Jupyter - [7/1]
6. Chapel-Python integration questions - [7/1]
7. How to get Conda and Virtualenv to work on mac OS Catalina? - [6/7]
8. How to make tkinter frames in a loop and update object values? - [6/3]
9. Why does using `or` within an except clause not cause a SyntaxError? Is there a valid use for it? - [6/2]
10. Speeding up pandas profiling analysis using check_correlation? - [6/2]

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2019-10-05 20:56:58 GMT

1. TypeError: attrib() got an unexpected keyword argument 'convert' - [14/3]
2. Given a dict iterator, get the dict - [8/1]
3. Filling an outlined circle - [7/3]
4. Fastest way to check if a string contains a string from a list - [5/6]
5. Sum numbers in a list but change their sign after zero is encountered - [5/4]
6. How to handle exceptions in dictionary comprehension - Python 3.x - [5/2]
7. Split dataframe by rows and generate list of dataframes in python - [5/2]
8. Keras model fails to decrease loss - [5/2]
9. Generate Python dictionary from combination of lists - [5/1]
10. Attaching class as method - [5/1]

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2019-09-28 20:30:43 GMT

1. Check reference list in pandas column using numpy vectorization - [7/3]
2. Avoiding combination of pip and conda - [7/0]
3. Does python reuse repeated calculation results? - [6/3]
4. Numpy error when converting array of ctypes types to void pointer - [6/1]
5. How to pass an intermediate amount of data to a subprocess? - [6/1]
6. How to list all function names of a Python module in C++? - [6/1]
7. Why does IPython manage memory differently than CPython when I delete a list? - [6/1]
8. How to convert html `abbr` tag text to a text in parentheses in Python? - [5/2]
9. How to count no of rows in a data frame whose values divisible by 3 or 5? - [5/2]
10. Finding Power Using Recursion - [5/2]

1. Why does (inf + 0j)*1 evaluate to inf + nanj? - [22/2]
2. Pandas aggregate with dynamic column names - [13/5]
3. Convert dictionaries with list of values into a dataframe - [11/4]
4. Python print random line from file without repeat - [7/6]
5. What is the difference between "if x == True" and "if x:" - [7/3]
6. Why is the 'all' implementation slower than writing a for loop - [7/1]
7. Get Max value comparing multiple columns and return specific values - [6/8]
8. Counting most common combination of values in dataframe column - [6/5]
9. Convert 3d numpy array into a 2d numpy array (where contents are tuples) - [6/4]
10. Fill rows with consecutive values and above rows using pandas - [6/2]

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2019-09-14 20:44:02 GMT

1. How to create a list of dictionaries from a dictionary with lists of different lengths - [15/4]
2. Numpy strange behavior past end of array - [9/1]
3. exec() not working with unicode characters - [9/1]
4. Turning values into columns - [7/5]
5. I have some problem with my homework. It's about stop the loops - [7/4]
6. How to count the number of occurences before a particular value in dataframe python? - [7/3]
7. Comma operator precedence - [6/3]
8. Why does float.__repr__ return a different representation compared to the equivalent formatting option? - [6/1]
9. Jaden Casing String: How to return a sentence string with capitalised words? - [6/1]
10. String Matching with wildcard in Python - [5/4]

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2019-09-07 19:23:05 GMT

1. Variable scope and name resolution in Python - [17/4]
2. Pandas transform inconsistent behavior for list - [15/3]
3. Weird file seeking behaviour - [11/1]
4. python: how to differentiate between cases of ValueError? - [8/2]
5. 'continue' the 'for' loop to the previous element - [7/4]
6. How can I split a dictionary in several dictionaries based on a part of values using Python - [6/5]
7. Fill in same amount of characters where other column is NaN - [6/4]
8. Why is there a huge difference in performance though time complexity for the two functions below seems to be similar? - [6/3]
9. How to perform a cumulative sum of distinct values in pandas dataframe - [6/3]
10. Count strings in nested list - [6/3]

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2019-08-31 22:41:03 GMT

1. Fill NaN based on previous value of row - [13/2]
2. Group by consecutive index numbers - [12/4]
3. Sort dictionary of lists by key value pairs - [12/3]
4. Add 2 new columns to existing dataframe using apply - [12/2]
5. Implement the function Fast Modular Exponentiation - [11/1]
6. Condition statement without loops - [7/4]
7. Why do these two functions have the same bytecode when disassembled under dis.dis? - [7/2]
8. Schrodinger equation for the hydrogen atom: why is numpy displaying a wrong solution while scipy isn't? - [7/2]
9. replace words and strings pandas - [7/1]
10. Numpy Array: First occurence of N consecutive values smaller than threshold - [6/3]

1. Concatenation of the result of a function with a mutable default argument - [33/2]
2. Give function defaults arguments from a dictionary in Python - [11/6]
3. Slicing behavior of python range()[:] - [11/2]
4. How to orient matplotlib ax objects to plot consecutively along a timeseries line (affine_transform, mtransform)? - [8/1]
5. How to look up identical column names in two dataframes and combine the matched columns - [6/5]
6. No of Pairs of consecutive prime numbers having difference of 6 like (23,29) from 1 to 2 billion - [6/5]
7. How to export a graph with alternative text in Excel to PDF using Python or R? - [6/2]
8. how to limit the duplicate to 5 in pandas data frames? - [6/2]
9. Reading multiple large csv files of size 10GB plus parallel in python - [6/1]
10. Why cv2.rectangle sometimes return np.ndarray, while sometimes cv2.UMat - [6/0]

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2019-08-10 21:33:55 GMT

1. Is there a difference between `board[x, y]` and `board[x][y]` in Python? - [31/5]
2. Pandas: fill one column with count of # of obs between occurrences in a 2nd column - [9/4]
3. Unique combinations of a list of tuples - [7/5]
4. exact model converges on keras-tf but not on keras - [7/0]
5. Property annotation that checks assignment to a guard value initially set to None - [6/3]
6. What's the Pythonic way to write conditional statements based on installed modules? - [6/2]
7. What does 'del self.self ' in an __init__ function mean? - [6/2]
8. Is it possible to override __getitem__ at instance level in Python? - [6/2]
9. Apply python lazy map for in-place functions? - [6/1]
10. Why does numpy not short-circuit on non-contiguous arrays? - [6/1]

1. Find all the numbers in one file that are not in another file in python - [10/4]
2. Incrementing add under condition in pandas - [8/5]
3. Can I split this column containing a mix of tuples/None more efficiently? - [6/4]
4. Measuring the diameter pictures of holes in metal parts, photographed with telecentric, monochrome camera with opencv - [6/3]
5. Which cubic spline method does scipy ndimage use for affine_transform? - [6/1]
6. Unable to close worksheet in xlsxwriter - [6/0]
7. How to change entire row if NaN present if a single column has NaN - [5/5]
8. How to find intersections of ranges of float tuples across two lists in python? - [5/4]
9. Find index of the first and/or last value in a column that is not NaN - [5/4]
10. How to join many fragmented time series in one regular Pandas DataFrame in Python - [5/4]

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2019-07-28 11:32:11 GMT

1. Is Python `list.extend(iterator)` guaranteed to be lazy? - [11/2]
2. Count the identical pairs in two lists - [10/6]
3. Get the next element of list in Python - [8/4]
4. Infer generic lambda parameters from another generic lambda's parameters - [8/1]
5. Group recursively adjacent tuples from a list in Python - [7/5]
6. Significance of Capitalization in Python collections module? - [7/1]
7. How to remove consecutive identical words from a string in python - [6/7]
8. Random list only with -1 and 1 - [6/6]
9. How to align two lists of numbers - [6/5]
10. Structuring a 2D array from a pandas dataframe - [6/2]

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2019-07-20 20:30:24 GMT

1. Concatenation using the + and += operators in Python - [37/1]
2. Issues implementing the "Wave Collapse Function" algorithm in Python 2.7 - [26/1]
3. Finding all combinations based on multiple conditions for a large list - [10/1]
4. Custom Neural Network Implementation on MNIST using Tensorflow 2.0? - [9/2]
5. Fast combination of non-unique rows in numpy array, mapped to columns (i.e. fast pivot table problem, without Pandas) - [8/4]
6. Why does python allow list[a:b] but not list[a] if a and b are out of index range? - [7/4]
7. What is wrong with the comparison a,b == 1,2? - [7/2]
8. dictionary keys to replace strings in pandas dataframe column with dictionary values and perform evaluate - [6/5]
9. Fastest way to search a list of named tuples? - [6/5]
10. Filling cell based on existing cells - [6/3]

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2019-07-13 20:02:22 GMT

1. How can torch multiply two 10000*10000 matrices in almost zero time? Why does the speed change so much from 349 ms down to 999 µs? - [9/3]
2. Defining a python dictionary of lambdas through a for cycle - [8/2]
3. Indexing numpy array with index array of lower dim yields array of higher dim than both - [7/3]
4. How to horizontally swap two halves of an image in python opencv - [7/2]
5. Why does python require you to acquire a lock before waiting on a condition - [7/1]
6. what does `a: b` statement do in python? - [7/0]
7. Reshape long to wide using columns names - [6/5]
8. Is string internally stored as individual characters, each character in memory shared by other similar strings? - [6/2]
9. How does appending names to many __init__*.py work? - [6/0]
10. How do I cut a string based on digit first certain digit and the rest - [5/3]

1. Efficient way to read 15 M lines csv files in python - [12/2]
2. Merging two data frames into a new one with unique items marked with 1 or 0 - [10/4]
3. Pandas merge and fillna - [9/4]
4. How to set the columns in pandas - [9/3]
5. How to slice a string input at certain unknown index? - [9/2]
6. What mechanism makes Python lambdas work without await keyword? - [8/1]
7. How to write cache function or equivalent in Python? - [7/6]
8. Conda error on update: `conda.core.link:_execute(637): An error occurred while installing package 'None'. AssertionError()` - [7/1]
9. Optimize the contrast/brightness (or histogram equalization) of a color photo of a sheet of paper with OpenCV - [6/2]
10. Board game: Find maximum green points with restricted red points - [6/1]

1. Why was p[:] designed to work differently in these two situations? - [29/6]
2. How do I create a new column in a dataframe from an existing column using conditions? - [11/5]
3. Anaconda 4.7.5 - Warning about conda-build <3.18.3 and issues with python packages - [10/3]
4. How to connect the ends of edges in order to close the holes between them? - [10/2]
5. Why is NumPy sometimes slower than NumPy + plain Python loop? - [9/3]
6. Find first and last non-zero column in each row of a pandas dataframe - [7/4]
7. Why does * work differently in assignment statements versus function calls? - [7/1]
8. How to vectorize a loop through a matrix numpy - [6/3]
9. Pandas expanding/rolling window correlation calculation with p-value - [6/2]
10. Using Pandas df.where on multiple columns produces unexpected NaN values - [6/1]

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2019-06-22 21:16:52 GMT

1. How to find the last non zero element in every column throughout dataframe? - [10/5]
2. Why are True and False being set in globals by this code? - [10/1]
3. How to maintain order when selecting rows in pandas dataframe? - [8/8]
4. Is there a short way to compare many values mutually at same time without using multiple 'AND'-s? - [8/3]
5. Heroku python app failing to build when installing sqlite3 - [8/2]
6. Fastest way to convert a list of indices to 2D numpy array of ones - [7/6]
7. How to assign unique values to groups of rows in a pandas dataframe based on a condition? - [6/3]
8. Handling zero multiplied with NaN - [6/3]
9. Using list.count to sort a list in-place using .sort() does not work. Why? - [6/2]
10. Pandas dataframe: How to set values after an index to 0 - [6/2]

1. How to use random to choose colors - [11/3]
2. Conditional Cumulative Sums in Pandas - [9/3]
3. Efficient way to loop over 2D array - [9/2]
4. Will passing ignore_index=True to pd.concat preserve index succession within dataframes that I'm concatenating? - [9/1]
5. How do I properly use a function under a class? - [8/4]
6. Why are f-strings faster than str() to parse values? - [7/1]
7. How to efficiently calculate triad census in undirected graph in python - [6/4]
8. Convert elements of list in pandas series using a dict - [6/3]
9. Python Regex escape operator \ in substitutions & raw strings - [6/2]
10. Rewrite to dictionary comprehensions - [6/2]

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2019-06-08 16:24:26 GMT

1. How to chain Python function calls so the behaviour is as follows - [19/5]
2. Inspect if an argument was passed positionally or via keyword - [11/1]
3. Python 'raise' without arguments: what is "the last exception that was active in the current scope"? - [10/2]
4. GroupBy operation using an entire dataframe to group values - [8/2]
5. object is subclassed during dynamic type creation but not during classic class definition in python2 - [7/1]
6. Groups of unique pairs where members appear once per group - [6/7]
7. Merge pandas DataFrame columns starting with the same letters - [6/7]
8. Retrieve definition for parenthesized abbreviation, based on letter count - [5/5]
9. How to assign groups based on a maximum sum? - [5/5]
10. Dictionary of lists to nested dictionary - [5/4]

1. Dictionary size reduces upon increasing one element - [15/5]
2. Fastest way to perform complex search on pandas dataframe - [14/2]
3. asyncio: running task only if all other tasks are awaiting - [8/4]
4. Adding strings in lists together - [8/4]
5. Why isn't pandas logical operator aligning on the index like it should? - [8/3]
6. Python memory usage of using two dictionaries vs one - [8/1]
7. Python Multiprocessing Queue when set to infinite is capped at 32768 (2^15) - [8/1]
8. Extracting the dimensions of a rectangle - [7/3]
9. Replace value with the value of nearest neighbor in Pandas dataframe - [7/3]
10. Selenium Wait for user to click on alert dialog box in python - [7/1]

1. Why does Python's hash of infinity have the digits of π? - [186/3]
2. Why is a `for` loop so much faster to count True values? - [23/5]
3. Why does splatting create a tuple on the rhs but a list on the lhs? - [18/5]
4. How to keep only the consecutive values in a Pandas dataframe using Python - [8/3]
5. Join the two images - [8/1]
6. find duplicates of items endings in a list - [7/4]
7. python3 os.rename() won't rename files with the word 'Copy' in name - [7/2]
8. "not in" identity operator not working when checking empty string for certain characters - [6/5]
9. Unix/Perl/Python: substitute list on big data set - [6/4]
10. Date Difference Between Two Device Failures - [6/2]

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2019-05-19 10:39:17 GMT

1. Slice a list based on an index and items behind it in Python - [20/16]
2. pylint protection again self-assignment - [14/2]
3. Filter a data-frame and add a new column according to the given condition - [11/5]
4. Understanding Python syntax in lists vs series - [9/3]
5. How to subset row of condition with some of N rows before the condition meet , more faster than my code? - [8/1]
6. How to generate a time-ordered uid in Python? - [7/2]
7. Creating an order-preserving multi-value dict for Django - [7/1]
8. Update elements of dataframe by applying function involving same row elements - [6/6]
9. Construct new column with first row of a groupby with two columns - Pandas - [6/4]
10. Do JavaScript classes have a method equivalent to Python classes' __call__? - [6/3]

1. What is the order of execution of __eq__ if one side inherits from the other? - [17/1]
2. What happened to python's ~ when working with boolean? - [15/1]
3. Function annotation with two or more return parameters - [13/1]
4. Why is it so slow when assigning a concatenated string to a variable in python? - [11/1]
5. How to add elements in list which is value of dictionary and those elements not be repeated as another keys of that dictionary? - [8/8]
6. Why is there a difference between round(x) and round(np.float64(x))? - [8/1]
7. Make a dataframe of all unique words with their count and - [7/1]
8. Python coroutines: Release context manager when pausing - [7/1]
9. When does Callable lack __module__? - [7/0]
10. How to convert single list's elements in form of dictionary - [6/6]

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2019-05-04 19:37:38 GMT

1. Randomness of Python's random - [44/5]
2. What does a yield inside a yield do? - [39/4]
3. Python "triplet" dictionary? - [15/5]
4. What does a star (asterisk) do in f-string? - [14/1]
5. What if the end-user didn't have the required library? - [13/5]
6. How to efficiently calculate prefix sum of frequencies of characters in a string? - [12/4]
7. Pythonic way to find the last position in a string matching a negative regex - [12/3]
8. When (and why) was Python `__new__()` introduced? - [11/2]
9. Map one pandas column using two dictionaries - [10/6]
10. convert io.StringIO to io.BytesIO - [8/4]

1. Is there any pythonic way to find average of specific tuple elements in array? - [17/9]
2. Converting a text document with special format to Pandas DataFrame - [12/8]
3. Python 3: Why is `object` an instance of `type` and `type` inherits from `object`? - [9/2]
4. How to rank a list of numbers and print out the ranking? - [7/6]
5. Is splitting assignment into two lines still just as efficient? - [7/2]
6. Is there a limit to the size of a Python module? - [7/1]
7. How to do clean logging, without making code look awful? - [7/1]
8. Python string multiplication with "is" comparison is inconsistent - [7/0]
9. How do you add a value to a float index of a dataframe for every other row? - [6/4]
10. Faster double iteration over a single array in Python - [6/3]

1. Why does Python start at index -1 (as opposed to 0) when indexing a list from the end? - [63/7]
2. How to remove list items depending on predecessor in python - [11/7]
3. How does Python know the values already stored in its memory? - [10/3]
4. Century handling in Pandas - [9/5]
5. How do I check if current code is part of a try-except-block? - [9/2]
6. Python sets versus arrays - [9/1]
7. Shared python generator - [8/1]
8. Convert pandas column of lists into matrix representation (One Hot Encoding) - [6/2]
9. Python Flask as Windows Service - [6/2]
10. Count of values grouped per month, year - Pandas - [6/2]

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2019-04-13 20:50:39 GMT

1. Why can I use a list index as an indexing variable in a for loop? - [72/6]
2. How to use Pandas to get the count of every combination inclusive - [10/4]
3. Define a list range inside a list - [10/4]
4. "is" operation returns false even though two objects have same id - [10/2]
5. Detect if an image is upside down - [10/0]
6. Django - how to visualize signals and save overrides? - [9/3]
7. Pandas: get the min value between 2 dataframe columns - [9/1]
8. Compute the product of 3 dictionaries and concatenate keys and values - [8/4]
9. How to extract consecutive elements from an array containing NaN - [8/2]
10. Python: next in for loop - [8/1]

1. Python: return float 1.0 as int 1 but float 1.5 as float 1.5 - [24/7]
2. How to tell a function to use the default argument values? - [21/4]
3. Running a python function in BigQuery - [10/1]
4. Combinations of multiple lists - [8/2]
5. Is there a way to change this nested loop into a recursive loop? - [7/4]
6. Splitting a list with strings and nested lists of strings into a flat list - [7/3]
7. How to efficiently unroll a matrix by value with numpy? - [7/3]
8. Using multiprocessing pool in Python - [7/2]
9. is there a way to replace and remove lines of a multi-lines string - [7/1]
10. Exhaustively get all the possible combinations of a word of three lettters - [7/1]

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2019-03-31 10:06:26 GMT

1. Python: How to get the similar-sounding words together - [16/1]
2. Why does numpy.sin return a different result if the argument size is greater than 8192? - [12/1]
3. How to check if all elements of 1 list are in the *same quantity* and in any order, in the list2? - [11/2]
4. Repeated import path patterns in python - [9/2]
5. Maximum sum of subsequence of length L with a restriction - [8/4]
6. Flag only first row where condition is met in a DataFrame - [8/4]
7. Search in Rotated Sorted Array in O(log n) time - [7/2]
8. Maximize consumption Energy - [7/1]
9. Cycle over list indefinitely - [6/6]
10. How to rearrange an Ordered Dictionary with a based on part of the key from a list - [6/5]

1. How to find the largest number(s) in a list of elements, possibly non-unique? - [16/6]
2. python displays `\n` instead of breaking a line - [14/4]
3. Don't understand why (5 | -2) > 0 is False where (5 or -2) > 0 is True - [13/6]
4. Wrapping homogeneous Python objects - [9/2]
5. Encoding special characters for passing to a URL - [8/1]
6. Recursively combine dictionaries - [7/6]
7. How to find the index of a value by row in a dataframe in python and extract the value of the following column - [7/3]
8. In Python, why do warnings not appear when using `eval`? - [7/1]
9. Python list comprehension for if else statemets - [6/2]
10. Jupyter notebook with Python 2 and Python3 Kernel - [6/2]

1. Python if-else code style for reduced code for rounding floats - [17/11]
2. Why is (2^31) >> 32 not 0? - [12/1]
3. Python: Check if string and its substring are existing in the same list - [11/5]
4. Convert dataframe into dictionary - [10/2]
5. How do I slice a string by characters in Python? - [8/5]
6. Fastest way to pop N items from a large dict - [8/2]
7. Why is AdamOptimizer duplicated in my graph? - [8/0]
8. How the dtype of numpy array is calculated internally? - [7/2]
9. Why is `arr.take(idx)` faster than `arr[idx]` - [7/0]
10. Python type hint for classes that support __getitem__ - [6/3]

1. Jupyter notebook: No connection to server because websocket connection fails - [30/3]
2. Inconsistent behaviour between dict.values() and dict.keys() equality in Python 3.x and Python 2.7 - [23/1]
3. Why a 352GB NumPy ndarray can be used on a 8GB memory macOS computer? - [19/1]
4. Why is int(x-1) == x True in Python 3.7 with some values of x? - [11/1]
5. Why does Python enforce change in size during iteration for dict, but not for list? - [10/0]
6. How to use math.log10 function on whole pandas dataframe - [7/3]
7. Consequences for virtual env when system's Python is removed and/or updated - [7/2]
8. os.path.basename() is inconsistent and I'm not sure why - [7/1]
9. Python script calling from laravel - [7/0]
10. Contract words in python with set length - [6/5]

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2019-03-02 21:06:04 GMT

1. Pandas: How to group by a value in column when there is list in one of the columns - [15/2]
2. Why does typing a variable (or expression) print the value to stdout? - [11/2]
3. How to pivot a dataframe with two columns with no index - [10/3]
4. Python: How to group-by with a list in column - [10/1]
5. Pandas - How to group-by and plot for each hour of each day of week - [9/2]
6. Check if the digits in the number are in increasing sequence in python - [8/5]
7. How to apply float precision (type specifier) in a conditional f-string? - [8/3]
8. How to put bigrams to list pandas - [8/2]
9. Premature ending of generator in list comprehension - [8/2]
10. What is wrong with using a bare 'except'? - [8/2]

1. Why does Python copy NumPy arrays where the length of the dimensions are the same? - [28/6]
2. Why does calling Python's 'magic method' not do type conversion like it would for the corresponding operator? - [22/2]
3. Strange behavior with Pandas median - [16/1]
4. Should linear read-shuffled write always be faster than shuffled read-linear write? (Was: Why is fancy assignment slower than fancy lookup?) - [13/2]
5. Calculating percentage of number with Tensorflow - [9/2]
6. Celery v4 not routing tasks as expected - [9/1]
7. How to update list recursively - [7/4]
8. Add user profile to request.user - [7/1]
9. Why does a = a['k'] = {} create an infinitely nested dictionary? - [7/1]
10. Python split text into tokens using regex - [6/4]

1. Why does Python allow out-of-range slice indexes for sequences? - [55/2]
2. How to efficiently use asyncio when calling a method on a BaseProxy? - [11/2]
3. Python multiprocessing crashes docker container - [10/2]
4. Python 3 pandas.groupby.filter - [9/5]
5. Apply list of regex pattern on list python - [9/2]
6. max/min function on list with strings and integers - [8/3]
7. re.sub(".*", ", "(replacement)", "text") doubles replacement on Python 3.7 - [8/1]
8. Fill Bounding Boxes in 2d array - [7/2]
9. Slider button click in selenium python - [7/1]
10. One line, three variables - [6/2]

1. How to combine similar characters in a list? - [8/3]
2. Inconsistency between image resizing with Keras (PIL) and TensorFlow? - [8/1]
3. How do Assignment Expressions `:=` work in Python? - [8/1]
4. How to reduce columns in dataframe pandas - [7/3]
5. Looking for a sequential pattern with condition - [7/3]
6. Create equal aspect (square) plot with multiple axes when data limits are different? - [7/2]
7. Is there a way to call an `async` python method from C++? - [7/1]
8. Counting column values based on values in other columns for Pandas dataframes - [6/4]
9. Binning continuous values with round() creates artifacts - [6/4]
10. Streaming json parser - [6/2]

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2019-02-02 21:08:53 GMT

1. When should I ever want to use pandas apply() in my code? - [19/2]
2. pandas filling nans by mean of before and after non-nan values - [18/1]
3. How to inform class weights when using `tensorflow.python.keras.estimator.model_to_estimator` to convert Keras Models to Estimator API? - [17/2]
4. Remove shared references in list-of-list? - [14/7]
5. How do I return a new dictionary if the keys in one dictionary, match the keys in another dictionary? - [12/7]
6. List comprehension iterating over two lists is not working as expected - [11/5]
7. Inserting list into a cell - why does loc ACTUALLY work here? - [9/1]
8. Generating all possible "unique" RPN (Reverse Polish notation) expressions - [8/2]
9. Improve min/max downsampling - [7/3]
10. Monkey patching pandas and matplotlib to remove spines - [6/3]

1. Dictionary infinite loop is exiting unexpectedly - [26/4]
2. Distribute an integer amount by a set of slots as evenly as possible - [15/5]
3. Extract Python function source text from the source code string - [9/3]
4. Weird result of floor division in numpy - [9/1]
5. Why does pipenv fail to install a package inside a docker container - [8/3]
6. What is the faster way to count occurrences of equal sublists in a nested list? - [7/4]
7. Union of two pandas DataFrames - [7/3]
8. Writing unit tests when using aiohttp and asyncio - [7/1]
9. Splitting a python string at a delimiter but a specific one - [6/7]
10. Create an Hour Glass pattern on Java or Python using Simple Code? - [6/4]

1. Unexpected behaviour with Python generator - [21/8]
2. Count letter frequency in word list, excluding duplicates in the same word - [19/7]
3. Group and aggregate a list of dictionaries by multiple keys - [10/5]
4. Given a list of words and a sentence find all words that appear in the sentence either in whole or as a substring - [10/4]
5. Python - Find prime factors - [9/0]
6. Why does increasing precision make this program faster? - [8/2]
7. Why does my code take different values when i switch the order in a set (knowing that order doesn't matter with sets) - [8/2]
8. Open a Word Document Using Python - [7/2]
9. How to find where in numpy array a zero element is preceded by at least N-1 consecutive zeros? - [7/2]
10. how to print the default value if argument is None in python - [6/6]

1. Create a dictionary by zipping together two lists of uneven length - [18/5]
2. Merge two dicts by same key - [15/5]
3. How to make a dict key deprecated? - [15/2]
4. What is the most efficient way to compute the difference of lines from two files? - [13/4]
5. Python - List returning [[...], 6] - [12/2]
6. Dynamic communication between main and subprocess in Python - [8/2]
7. How to plot Gaia astrometry data to TESS images using Python? - [8/1]
8. How to find out if (the source code of) a function contains a loop? - [7/4]
9. Comparing Results from StandardScaler vs Normalizer in Linear Regression - [7/2]
10. How to store functions as class variables in python? - [7/2]

1. Why does `if None.__eq__("a")` evaluate to True? - [79/3]
2. For loops with pandas - When should I care? - [18/1]
3. Python performance comparison for creating sets - set() vs. {} literal - [13/1]
4. pandas replace NaN to None exhibits counterintuitive behaviour - [12/1]
5. How to remove duplicate lines - [11/6]
6. What does underscore in a number mean? - [10/3]
7. Pip install - do downloaded whl files persist & take disk space? - [9/2]
8. Print specific keys and values from a deep nested dictionary in python 3.X - [8/3]
9. AWS Lambda Python 3.7 runtime exception logging - [8/2]
10. Find all subarrays of fixed length with a given ranking - [7/3]