(cccvii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-12-25 15:54:16 GMT

---

1. Combine 2 string columns in pandas with different conditions in both columns - [8/5]
2. Unable to perform any actions on elements which were located under flexbox - [8/1]
3. NamedTuple with default values - [7/1]
4. Remove consecutive duplicates while keeping the max value - [6/4]
5. Rolling sum based on all previous dates NOT previous rows sorted by date - [6/3]
6. Proper C++ type for nested list of arbitrary and variable depth? - [6/3]
7. Programming a probability of twins reunion - [6/2]
8. Check if values in a column exist elsewhere in a dataframe row - [5/4]
9. How to speed up the agg of pandas groupby bins? - [5/4]
10. python How to transpose the count of values in one pandas data frame to multiple columns in a second data frame? - [5/3]

(cccvi) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-12-18 14:29:24 GMT

---

1. Can a function and local variable have the same name? - [14/4]
2. How to override names of dataclasses attributes in Python? - [9/2]
3. Ensure that an argument can be iterated twice - [8/4]
4. What allows bare class instances to have assignable attributes? - [8/1]
5. Python pandas equivalent to R's group_by, mutate, and ifelse - [7/4]
6. python pandas "groupby" and "if any" condition - [7/2]
7. Pandas group by cumsum with a flag condition - [7/2]
8. Filtering a mutli-index - [7/1]
9. Pythonic way to make a dictionary from lists of unequal length without padding Nones - [7/1]
10. How to get a uniformly-distributed random integer-points in an nD ball? - [7/0]

(cccv) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-12-11 22:35:35 GMT

---

1. Double antiderivative computation in python - [7/2]
2. How to make media file's URL restricted to the unauthenticated users in Django? - [7/1]
3. Inheriting Generic classes with restricted TypeVar - [5/2]
4. How to create substrings efficiently - [5/2]
5. How do i make the program print specific letters in this specific format i give to it? - [4/6]
6. Numpy array counter with reset - [4/6]
7. Define class method based on import success - [4/5]
8. __eq__ order enforcement in Python - [4/3]
9. Compare data series columns based on a column that contains duplicates - [4/2]
10. Get most common value for each value in row - pandas df - [4/2]

(ccciv) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-12-04 16:23:51 GMT

---

1. Sorting multiple lists together in place - [8/1]
2. Trouble printing a generator expression as a list - [6/2]
3. Getting the value of a return after a yield in python - [5/5]
4. Round off date in data frame in Python - [5/3]
5. In pandas, how to pivot a dataframe on a categorical series with missing categories? - [5/2]
6. on what systems does Python not use IEEE-754 double precision floats - [5/1]
7. understanding sklearn calibratedClassifierCV - [5/1]
8. Fastest way to find all pairs of close numbers in a Numpy array - [4/5]
9. Python best way to 'swap' words (multiple characters) in a string? - [4/4]
10. How to reorder rows in pandas dataframe by factor level in python? - [4/3]

(ccciii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-11-27 16:50:46 GMT

---

1. Does NumPy array really take less memory than python list? - [8/2]
2. array_2 = array_1 vs. array_2 = array_1.view() - [7/1]
3. How can I use value_counts() only for certain values? - [5/3]
4. Find the indices where a sorted list of integer changes - [5/3]
5. pytube: AttributeError: 'NoneType' object has no attribute 'span' - [5/2]
6. Using pandas nullable integer dtype in np.where condition - [5/2]
7. Sum dataframe values in for loop inside a for loop - [5/1]
8. Python 3.10 pattern matching (PEP 634) - wildcard in string - [5/1]
9. How do I assign values from a dataframe to deciles created in another dataframe? - [5/0]
10. Why do these Python import scenarios work (or not) the way they do? - [5/0]

(cccii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-11-20 15:01:04 GMT

---

1. Implementation of the Max() function in Python - [15/1]
2. Plot bar chart in multiple subplot rows with Pandas - [6/1]
3. Python threads difference for 3.10 and others - [6/1]
4. Using a postgres composite field containing a geography type for django ORM usage - [6/0]
5. Any simpler way to assign multiple columns in Python like R data.table := - [5/3]
6. How to build triangular matrix as df with data from dataframe - [5/3]
7. How to find the number of neighbours pixels in binary array - [5/1]
8. Why aren't Pandas operations in-place? - [5/0]
9. Sum of 1+3+5...+n until the sum exceeds 100 - [4/9]
10. Fillna if all the values of a column are null in pandas - [4/5]

(ccci) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-11-13 23:38:47 GMT

---

1. Why is Python list slower when sorted? - [14/3]
2. Combined aggregate based on valid values - [9/4]
3. Create a new column in a Pandas DataFrame from exisiting column names - [8/6]
4. Get min and max values of categorical variable in a dataframe - [8/4]
5. No module named wtforms.compat - [8/1]
6. Weird behaviour of assignment in pandas.DataFrame - [7/3]
7. How to hint homogenous list of instances of same subclass? - [7/0]
8. strange implicit conversion of data type in numpy - [6/1]
9. Why does lxml.etree.SubElement() allow making elements which are not serialisable? - [6/1]
10. For loop that adds and deducts from pandas columns - [6/0]

(ccc) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-11-06 16:14:07 GMT

---

1. After conda update, python kernel crashes when matplotlib is used - [28/2]
2. Repeating triangle pattern in Python - [21/6]
3. How to convert dataframe? - [6/3]
4. How do I find the row # of a string index? - [6/3]
5. Calculate determinant of unitary matrices based on SVD implementation - [6/0]
6. If condition with a dataframe - [5/5]
7. How to detect if `__init_subclass__` has been overridden in a subclass? - [5/3]
8. Transforming a list of points in a "rank" of indexes - [5/2]
9. How to create an interactive brain-shaped graph? - [5/1]
10. How to specify requirements in Python packages metadata - [5/1]

(ccxcix) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-10-30 13:46:37 GMT

---

1. NumPy: construct squares along diagonal of matrix / expand diagonal matrix - [15/3]
2. Convert subset of columns to rows by combining columns - [14/3]
3. Efficient algorithm to get all the combinations of numbers that are within a certain range from 2 lists in python - [8/2]
4. Is the key order the same for OrderedDict and dict? - [6/3]
5. Django REST API accept list instead of dictionary in post request - [6/2]
6. cannot update spyder=5.1.5 on new anaconda install - [6/1]
7. Why does starred assignment produce lists and not tuples? - [6/1]
8. Is there a way to match inequalities in Python ≥ 3.10? - [5/1]
9. Efficient way of using numpy memmap when training neural network with pytorch - [5/0]
10. How to find which column contains a certain value? - [4/4]

(ccxcviii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-10-23 13:48:47 GMT

---

1. Why does redefining a variable used in a generator give strange results? - [27/3]
2. Why does this Python snippet regarding dictionaries work? - [10/3]
3. Why doesn't mypy pass when TypedDict calls update method - [8/1]
4. How do I speed up all_pairs_dijkstra_path_length - [6/1]
5. NumPy memory leak in np.ones? - [6/0]
6. Iterate over pairs in order of sum of absolute values - [5/7]
7. Is there a way to improve the performance of this fractal calculation algorithm? - [5/2]
8. Reading Validation-Dataset takes indefinitely long - [5/0]
9. Measure performance for small application - [5/0]
10. Accessing __doc__ of function inside a lambda - [4/3]

(ccxcvii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-10-17 06:58:09 GMT

---

1. Why is there a difference between `0--3//2` and `--3//2`? - [21/2]
2. Why is `np.sum(range(N))` very slow? - [16/3]
3. Fast calculation of floating 1/N if factorization of very large integer N is known - [11/1]
4. Python function to find the numeric volume integral? - [8/2]
5. Add comma sepated values inside a column - [7/5]
6. Using assignment as operator - [7/1]
7. Disable Python auto concatenate strings across lines - [7/0]
8. How to shuffle the order of if statements in a function in Python? - [6/3]
9. How to disable server exceptions on fast-api when testing with httpx AsyncClient? - [6/2]
10. Is it possible to make the imports within `__init__.py` visible for python `help()` command? - [6/1]

(ccxcvi) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-10-09 22:24:26 GMT

---

1. What is this odd sorting algorithm? - [61/5]
2. python regex where a set of options can occur at most once in a list, in any order - [11/7]
3. Django rest framework simple jwt: decode() got an unexpected keyword argument 'verify' - [11/2]
4. determine the range of a value using a look up table - [6/2]
5. How can I solve this arithmetic puzzle? My solution is too slow after n = 14 - [6/1]
6. Why do keyword arguments to a class definition reappear after they were removed? - [5/3]
7. walrus operator in dict comprehension - [5/2]
8. How to remove parent json element in python3 if child is object is empty - [5/2]
9. How to force keras to use tensorflow GPU backend - [5/2]
10. How to fillna in pandas dataframe based on pattern like in excel dragging? - [5/2]

(ccxcv) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-10-02 16:03:54 GMT

---

1. Why doesn't NaN raise any errors in python? - [8/1]
2. What is the fastest way to pass a message between two processes in python? - [8/0]
3. Why aren't augmented assignment expressions allowed? - [7/3]
4. Generating a dictionary of parameters from keyword arguments - [7/2]
5. How do you join multiple rows into one row in pandas? - [7/2]
6. Python program to print the pattern 1 121 12321 12 1 for n rows - [6/7]
7. Delay between different function calls - [6/4]
8. How can I combine elements of list in pairs in every iteration without repetition? - [6/3]
9. How to get an abstract dataclass to pass mypy? - [6/2]
10. How to hint at number *types* (i.e. subclasses of Number) - not numbers themselves? - [6/2]

(ccxciv) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-09-25 19:44:59 GMT

---

1. What's the point of using [object instance].__self__? - [24/2]
2. Adding water to stack of glasses - [10/2]
3. str.isdigit() behaviour when handling strings - [10/1]
4. Tuple with multiple numbers of arbitrary but equal type - [8/1]
5. Different access time to a value of a dictionary when mixing int and str keys - [8/1]
6. Why does the lines count differently using two different way. to load text? - [8/1]
7. How to read & decode Secure QR code on Indian Aadhaar Card image - [6/2]
8. Euler-Mascheroni Constant - [6/2]
9. Python: calling a child function using a string - [5/4]
10. Distinguishing between Pydantic Models with same fields - [5/2]

(ccxciii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-09-18 20:56:51 GMT

---

1. Invoking a constructor in a 'with' statement - [30/3]
2. Numpy convolving along an axis for 2 2D-arrays - [8/2]
3. Checking if elements in an array exist in a pandas DataFrame - [7/6]
4. Order of evaluation of assignment expressions (walrus operator) - [7/1]
5. Why is this expression False? - [6/0]
6. Split a string in pandas row and insert new rows by enlarging the dataframe - [5/3]
7. Pandas: reading multi-index JSON as pandas data frame - [5/2]
8. Numpyic way to sort a matrix based on another similar matrix - [5/1]
9. How many different sums can we get from very few floats? - [5/1]
10. Python - doing maths with a nested list - [4/4]

(ccxcii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-09-11 14:05:42 GMT

---

1. How is the s=s+c string concat optimization decided? - [10/1]
2. How do I save and load BatchNormalization Layer in this Tensorflow model? - [7/1]
3. How to read complex data in python? - [6/3]
4. Importing python sub-packages in a new package - [6/0]
5. CNN: correlation between filter size and stride - [6/0]
6. Mapping a[i+j] array to A[i,j] matrix - [5/3]
7. Find indices for elements in array B best matching those in array A - [5/3]
8. Pyspark > Dataframe with multiple array columns into multiple rows with one value each - [5/3]
9. Python multiprocessing making same object instance for every process - [5/3]
10. list __size__() result depending on creation method - [5/0]

(ccxci) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-09-04 20:03:19 GMT

---

1. Filtering list of tuples based on condition - [10/3]
2. How can I find the k-th largest element in an exponentially large list? - [8/2]
3. Reversing Lists Splices Python Optimization (USACO February 2020 Bronze Question 3 "Swapity Swap") - [7/6]
4. Understanding what's happening in the Kadane Algorithm (Python) - [6/2]
5. Python - Is there a shorthand for [eg]: print(f'type(var) = {type(var)}') - [6/1]
6. Type a function with a callable - [6/1]
7. Make a list from multiple list - [5/8]
8. bash + how to capture the version from rpm - [5/7]
9. Spliting a list into n uneven buckets with all combinations - [5/3]
10. Why does order of function calls impact runtime - [5/2]

(ccxc) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-08-28 12:24:19 GMT

---

1. Why is any(True for ... if cond) much faster than any(cond for ...)? - [54/4]
2. Efficiently insert multiple elements in a list (or another data structure) keeping their order - [6/2]
3. Is the [0]*n runs in O(n) or O(1) in Python - [6/0]
4. Efficient way to sort and concatenate the dataframes - [5/6]
5. How can I document methods inherited from a metaclass? - [5/2]
6. How to create the custom loss function by adding negative entropy to the cross-entropy? - [5/2]
7. How do I melt a pandas dataframe? - [5/1]
8. Split string without losing delimiter (and its count) - [4/3]
9. Python3 dataframe mutiple separators - [4/3]
10. Make Number of Rows Based on Column Values - Pandas/Python - [4/3]

(cclxxxix) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-08-21 20:38:42 GMT

---

1. JSON upload to BigQuery - [8/1]
2. Installing SQLAlchemy with Poetry causes an AttributeErrorr - [6/2]
3. Pandas: Cell frequency count by index - [5/5]
4. How to calculate ratio of values in a pandas dataframe column? - [5/4]
5. Efficient way of Groupby Roll up/down for any kind of aggregates - [5/2]
6. Can anyone please explain why set is behaving like this with boolean in it? - [5/1]
7. numpy: accumulate 'greater' operation - [4/4]
8. Where can I find a full description of the "format" field for NumPy objects that includes 'Z' for "complex"? - [4/2]
9. Python list comparison numpy optimization - [4/2]
10. Problem with Anaconda Uninstall/Install (MacOS) - [4/1]

(cclxxxviii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-08-14 20:04:45 GMT

---

1. Why does print(t) error if t.__str__() returns a non-string, but not print(t.__str__())? - [23/6]
2. Using __new__ in inherited dataclasses - [7/2]
3. Why does python's Exception's repr keep track of passed object's to __init__? - [6/3]
4. Using decorators of optional dependency - [5/1]
5. Rearranging License Plate characters based on country - [5/1]
6. Boxplot by two groups in pandas - [4/4]
7. subset multi-indexed df based on multiple level 1 columns - [4/4]
8. Why does the key 'kwargs' appear when using **kwargs? - [4/3]
9. How can I plot a function with errors in coefficients? - [4/3]
10. Heuristic to choose five column arrays that maximise the dot product - [4/2]

(cclxxxvii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-08-07 20:23:16 GMT

---

1. Simultaneous assignment indexing different list elements in Python - [11/3]
2. Do asynchronous context managers need to protect their cleanup code from cancellation? - [11/2]
3. How exactly is a Decimal object encoded in python? - [8/1]
4. Why do Inline::Python functions that print fail to be redirected? - [6/2]
5. Special text to latin characters in python - [5/2]
6. Numpy matrix creation timing oddity - [5/1]
7. How to remove extra '' from list - [4/4]
8. How can we take out the product of elements? - [4/3]
9. How can I use this complex number in numpy matrix? - [4/3]
10. Why is my slash command not displayed despite correct usage? - [4/2]

(cclxxxvi) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-08-01 06:46:48 GMT

---

1. Identify index of all elements in a list comparing with another list - [13/6]
2. How to convert vertical pandas table of 2 columns to horizontal table based on common ID value in python - [6/5]
3. Why are np.hypot and np.subtract.outer very fast? - [6/1]
4. how make a list unique and keep the index of eliminated items? - [5/3]
5. Create hierarchy column in pandas - [5/2]
6. Custom input to a Python program from a Java program - [5/2]
7. Why does Pytorch autograd need a scalar? - [5/1]
8. Why is 10 to the power not equal to scientific notation for large numbers in Python? - [5/1]
9. Split a multifasta file to files with the same number of accesion numbers - [4/4]
10. How to map two dataframe with output of overlapping items in new columns? - [4/4]

(cclxxxv) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-07-24 18:37:56 GMT

---

1. set of sets and "in" operator - [7/2]
2. Mypy complains about __setitem__ signature - [6/2]
3. Adding level 2 index as a sum of other indexes with a condition - [6/2]
4. CUDA out of memory error, cannot reduce batch size - [5/2]
5. obtain corresponding values from 3rd column after groupby 2 columns - [5/2]
6. Adding a total per level-2 index in a multiindex pandas dataframe - [5/1]
7. Is there a bug in Python's multiprocess pool leaving defunct processes in spawn mode? - [5/0]
8. Checking if a list contains any one of multiple characters - [4/4]
9. Convert a list into a dict where each key is nested under the next one - [4/4]
10. How to get single median in numpy masked array with even number of entires - [4/3]

(cclxxxiv) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-07-17 17:41:09 GMT

---

1. Numpyic way to sort an ndarray clockwise? - [12/2]
2. How to calculate the active dates in every month or in a range of month - [6/3]
3. Is there a way to pass flags to runpy? - [6/1]
4. How do I send multiple users an email through smtplib in python? - [6/1]
5. Merging dataframes with multi indexes and column value - [6/1]
6. How to split a string into numbers and characters - [5/5]
7. Similar random number generation in python and c++ but getting different output - [5/3]
8. Cumulative sum but conditionally excluding earlier rows - [5/3]
9. Runtime Error Deadlock occurring randomly in Django - [5/2]
10. How can I write a function in python to write the file names of directory with the output of my function to a dataframe? - [5/2]

(cclxxxiii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-07-10 20:49:08 GMT

---

1. Python self-referential list produces weird output on sorted - [44/2]
2. Why does inspect() think map isn't built in? - [24/1]
3. Impact of removing a list item on reversed() in python - [7/2]
4. Rearranging numbers in a string - [6/5]
5. Using proxy with Chromedriver within Google Cloud Engine - [6/1]
6. Pandas Rolling second Highest Value based on another column - [6/1]
7. Hermetic / Non Hermetic Packages in Python - [6/1]
8. Python dictionary like string to dictionary - [5/3]
9. Make a tree structure from a path name - [5/2]
10. Python AST code sample taken from the book Serious Python: Black-Belt Advice on Deployment, Scalability, Testing, and More - [5/1]

(cclxxxii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-07-03 15:07:28 GMT

---

1. Understand Python swapping: why is a, b = b, a not always equivalent to b, a = a, b? - [90/4]
2. Execution time difference between x += y and x = x + y - [9/2]
3. "Pythonic" way to return elements from an iterable as long as a condition based on previous element is true - [6/5]
4. Getting error while converting a code in tf1 to tf2 - [6/0]
5. Interpolating non-uniformly distributed points on a 3D sphere - [5/1]
6. Why is Python's requests 10x faster than C's libcurl? - [5/1]
7. How to split the Cora dataset to train a GCN model only on training part? - [5/0]
8. Python input function, printing - [4/6]
9. Python Typing List[Dict] vs List[dict] - [4/3]
10. JSON format not right - [4/2]

(cclxxxi) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-06-26 15:09:30 GMT

---

1. List containing only every second second pair of elements - [8/7]
2. Check for presence of a sublist in list with order kept, and allow wildcards - [8/3]
3. Is there any way I can change the way list() function works on my class? - [7/3]
4. I have a DataFrame which contains first and last number of some intervals. how can I get how many times each number was in each interval? - [5/5]
5. How do you create a random list of integers, but exclude a certain number? - [5/4]
6. How can I convert transform column in Pandas using regex - [5/2]
7. How to scatter randomly points on a sphere - [5/1]
8. Argparse: "-p" or "-p=value" but not "-p value" - [5/1]
9. Performance overhead of nested functions in Python - [5/0]
10. Given a Python list of lists, find all possible flat lists that keeps the order of each sublist? - [4/6]

(cclxxx) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-06-19 16:27:27 GMT

---

1. Why is Python recursion so expensive and what can we do about it? - [52/6]
2. Fastest way to sample most numbers with minimum difference larger than a value from a Python list - [9/2]
3. Correctly compute the divergence of a vector field in python - [8/1]
4. Why is this Julia snippet so much slower than the Python equivalent? (with dictionaries) - [8/1]
5. In Pandas with Groupby: assign a value from a column conditioned on another column - [5/3]
6. Webscraping - Trying to extract some data, but got stuck at the final hurdle - [5/3]
7. What is the Sobel operator? - [5/2]
8. SqlAlchemy 1.4 throws InternalServerError (cache lookup failed for type 3912040) - [5/2]
9. Greedy algorithm to split a list of lists of numbers into two partitions with same amount of each number in Python - [5/1]
10. How to install dynamic library using setup.py? - [5/1]

(cclxxix) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-06-12 13:48:30 GMT

---

1. How to use df.loc (or some other method) to make a new column based on specific conditions? - [8/4]
2. Distribute a standalone Python software with Julia dependencies - [7/1]
3. Fastest way to get the minimum value of data array in another paired bin array - [6/2]
4. Creating a dynamic partial callable object in Python - [5/3]
5. Why can't comments appear after a line continuation character? - [5/2]
6. Equality Comparison with NumPy Instance Invokes `__bool__` - [5/2]
7. Mean between two datetimes; if NaN, get last non-NaN value - [5/1]
8. Can't scrape product title from a webpage - [5/1]
9. Convert Pandas dataframe values to percentage - [4/5]
10. Previous in yield operations - python - [4/4]

(cclxxviii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-06-05 14:32:08 GMT

---

1. How to extract country from a string in python - [5/4]
2. Is there a function to write certain values of a dataframe to a .txt file in Python? - [5/3]
3. How to use KEYDOWN? - [5/3]
4. Three argument pow for arrays - [5/3]
5. How to do data analysis (like counts, ucounts, frequency) with pandas? - [5/1]
6. numba with complex numpy array - [5/0]
7. Split a list from Dataframe column into specific column name - [4/5]
8. Sort pandas df subset of rows (within a group) by specific column - [4/4]
9. Pick last valid data dates from pair columns in a large dataset - [4/4]
10. Find the smallest element in a list of list - [4/3]

(cclxxvii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-05-29 18:33:34 GMT

---

1. Remove any empty list present in the list - [10/7]
2. Numpy empty list type inference - [7/2]
3. ModuleNotFoundError: No module named 'grp' on windows - [6/1]
4. How to configure fields in Django forms.Form? - [6/1]
5. Vectorization or efficient way to calculate Longest Increasing subsequence of tuples with Pandas - [6/1]
6. Python pandas: fast way to flatten JSON into rows by a surrogate key - [6/1]
7. Convert a dataframe to a list of tuples - [5/4]
8. How to build a heatmap? - [5/2]
9. "No message found for this issue" when running pipeline with SonarQube - [5/0]
10. Is there a way to use the previous calculated row value with the sum of a different column in a Pandas Dataframe? - [4/4]

(cclxxvi) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-05-22 19:25:40 GMT

---

1. Count how many arguments passed as positional - [17/6]
2. Python split string by multiple delimiters following a hierarchy - [16/3]
3. Why is an in-place integer operation like a *= b slower than a = a * b? - [11/0]
4. Pandas DataFrame Assignment Bug using Dictionaries of Strings and Floats? - [9/2]
5. Why does symbol definition statement inside exec() sometimes have no effect on the local symbol table? - [9/0]
6. Why do the same requests result in different status codes 200 vs. 429 on two machines? - [7/1]
7. How to dynamically extract data from multiple Python dict entries - [6/6]
8. iterate over rows to check if values of an array exists between two columns - [6/3]
9. What is the pythonic/idiomatic way of filtering the output of a generator expression? - [5/5]
10. Why is the code running so slow that I use for loop in it. Is there a faster way? - [5/4]

(cclxxv) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-05-15 18:54:54 GMT

---

1. sample from randomly generated numbers? - [8/3]
2. Pandas - Updating columns based on several conditions - group by method - [8/1]
3. Using PyTorch's autograd efficiently with tensors by calculating the Jacobian - [7/1]
4. What is the most efficient way of getting the intersection of k sorted arrays - [6/8]
5. How do I find the maximum sum of subarray if i have to delete the largest element in the subarray - [6/3]
6. How can I calculate the accuracy of each predicted value one by one in Python? - [6/1]
7. list comprehension vs for loop, within class definition - [6/1]
8. I'm trying to make a program that makes you lose "energy" (Python 3) - [5/3]
9. Pandas, numpy.where(), and numpy.nan - [5/2]
10. Does Python have a basename function that is equal to Unix basename? - [5/2]

(cclxxiv) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-05-08 17:36:50 GMT

---

1. Confusing Speaker labels timestamps from Watson STT shows incorrect number of seconds that each speaker has spoken - [7/0]
2. Only keep df column values that contain a string from list of string - [6/4]
3. When running python 3.9.4 I am unable to import tkinter, but downgrading to 3.8.2 works perfectly fine - [6/0]
4. RuntimeError: `loss` passed to Optimizer.compute_gradients should be a function when eager execution is enabled. Working with Tensorflow 1.15 - [6/0]
5. How to get the sums of unique values with respective occurrence count from a list in Python? - [5/4]
6. Add and count non-zero values of rows based on current date - [5/2]
7. Why is it not possible to implement fixed-point combinator like in the definition? - [5/2]
8. Gauss Date Calculation in Python - [5/1]
9. Drop rows that only relate to one value in other columns pandas - [5/1]
10. Creating fake data using date logic - [5/1]

(cclxxiii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-05-01 14:31:29 GMT

---

1. WARNING messages when I update PIP or install Packages - [54/5]
2. How can I do a python keyword search and word counter within all csvs files in directory and write to a single csv? - [10/2]
3. Create a symmetric matrix that counts the relational records - [8/3]
4. Pip 21.1 can't import InvalidSchemeCombination - [8/1]
5. Circular histogram with fitted Von Mises Distribution - [7/1]
6. Accelerate the loop - [7/0]
7. How to print row(s) if they meet a certain range - [6/3]
8. Creating DataFrame of different variable types - [6/2]
9. Can getline() be used multiple times within a loop? - Cython, file reading - [6/1]
10. Drawing a neural network - [6/1]

(cclxxii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-04-24 19:06:09 GMT

---

1. Why is a=a*100 almost two times faster than a*=100? - [16/2]
2. Django - return each model value without field - [8/1]
3. How to compile Python + Electron JS into desktop app (exe) - [7/1]
4. How to load a pre-trained PyTorch model? - [7/1]
5. Robot return to origin - [6/3]
6. Create and solve different combinations of linear equation systems using data stored in several matrices in python - [6/1]
7. How to build a Tensorflow model with more than one input? - [6/1]
8. Dynamically getting a list of standard library python packages names - [6/1]
9. how to get a subgroup start finish indexes of dataframe - [5/4]
10. Faster way to sum all combinations of rows in dataframe - [5/3]

(cclxxi) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-04-17 19:11:41 GMT

---

1. Why does Python return [15] for [0xfor x in (1, 2, 3)]? - [45/4]
2. Applying regex to pandas column based on different pos of same character - [8/3]
3. pandas styling doesn't display for all rows in large dataframes in Chrome or Edge - [8/1]
4. How does parent of custom exception class get the arguments if I don't call super().__init__()? - [8/1]
5. Why does XGBoost with datasets of zeros return a non-zero prediction? - [7/1]
6. Why does this print statement using a Python f-string output double parentheses? - [6/2]
7. Displaying floats using F-string - [6/1]
8. How to programmatically ensure that a function includes a return statement? - [5/5]
9. Fast implementation of finding duplicate coordinates - [5/2]
10. Python variable and function annotation raises AttributeError - [5/2]

(cclxx) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-04-10 18:59:38 GMT

---

1. Spyder 5 missing dependencies - spyder_kernels version error - [23/1]
2. Why does pandas "None | True" return False when Python "None or True" returns True? - [9/1]
3. __eq__() called multiple times instead of once in nested data structure - [7/1]
4. Transform a Pandas Dataframe Column and Index to Values - [6/3]
5. Optional arguments without a default value - [6/2]
6. Partial of a class coroutine isn't a coroutine. Why? - [6/1]
7. Numpy matrix multiplication but instead of multiplying it XOR's elements - [5/3]
8. In Pytorch, is there a difference between (x<0) and x.lt(0)? - [5/2]
9. Create column based on date conditions, but I get this error AttributeError: 'SeriesGroupBy' object has no attribute 'sub'? - [5/1]
10. indexing rows and columns in numpy - [4/3]

(cclxix) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-04-03 13:23:28 GMT

---

1. Pythonic way to split 3D array in smaller blocks of fixed dimension - [6/1]
2. Pandas normalise by column on groupby - [5/3]
3. Is there a way to return a previously defined object when initiating a new one? - [5/2]
4. Why is Python creating a complex number here? - [5/2]
5. Django- Display records in django-admin with group, max count and timestamp all together - [5/1]
6. How to count string in columns using pandas? - [5/1]
7. How to split the string by '/' and reform it by the split substrings in a dataframe in Python? - [5/1]
8. Finding the smallest n values that are at least x apart in a list - [4/3]
9. Splitting a cell in pandas into multiple rows - [4/3]
10. Groupby pandas but perform calculation on multiple columns - [4/3]

(cclxviii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-03-27 17:37:58 GMT

---

1. Pandas check if value in one multiindex column is in any column, same row of different multiindex - [13/4]
2. How do I make/convert my python app into an Rshiny app? Its a brainteaser! Unable to find what change UI needs in R - [8/0]
3. How to improve the pattern matching on a list in Python - [7/2]
4. Pandas Groupby count on multiple columns for specific string values only - [6/6]
5. Update string replace to ignore values in list - [6/4]
6. Levenshtein distance giving strange values - [6/2]
7. How can I run a Python project on another computer without installing anything on it? - [6/2]
8. np.linalg.norm ord=2 not giving Euclidean norm - [6/1]
9. Sorting by data in another Dataframe - [5/4]
10. Merge by looking up multiple column values - [5/4]

(cclxvii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-03-20 19:43:26 GMT

---

1. AttributeError: can't set attribute when connecting to sqlite database with flask-sqlalchemy - [16/6]
2. Split/Expand Dataframe based on column values - [9/5]
3. Printing Webpage in a Specific Location in Selenium - [7/1]
4. how to order it and count in python - [6/3]
5. How to remove a character from some rows in a dataframe column? - [5/7]
6. HTTP Error 503: Service Unavailable whan trying to download MNIST data - [5/2]
7. Why does pd.to_datetime use different default Y/M/D based on whether format is specified - [5/2]
8. How to transfer multiple files from sub directories to a single path folder using python? - [5/2]
9. The wikipedia api seems to almost always get the word in question wrong - [5/1]
10. TensorFlow LSTM predicting same value - [5/1]

(cclxvi) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-03-06 19:28:13 GMT

---

1. How can I bulk/batch transcribe wav files using python? - [8/4]
2. Find single number in pairs of unique numbers of a Python list in O(lg n) - [6/2]
3. Segmentation fault when importing a C++ shared object in Python - [6/1]
4. How to quickly get the last line of a huge csv file (48M lines)? - [5/6]
5. How to get index of numpy multidimensional array in reverse order? - [5/2]
6. Find the index of first non-zero element to the right of given elements in python - [5/2]
7. Strange Behavior With Pandas Group By - Transform On String Columns - [5/1]
8. Why do predict_proba and probA_ / probB_ not match in sklearn SVC? - [5/0]
9. what is the most conventional way to integrate C code into a Python library using distutils? - [5/0]
10. How to loop to check if all values in a list are bigger than the values in another list? - [4/9]

(cclxv) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-02-27 18:35:08 GMT

---

1. Why aren't my list elements being swapped? - [11/1]
2. Title words in a column except certain words - [8/4]
3. specify number of spaces between pandas DataFrame columns when printing - [8/1]
4. More effective / clean way to aggregate data - [5/5]
5. Is there a way to write this if-else using min and max? - [5/4]
6. What does the operator += return in Python - [5/4]
7. Find missing numbers in a sorted column in Pandas Dataframe - [5/3]
8. Perform best cycle sort knowing order at the end - [5/1]
9. Making a scroll bar but its inconsistent - [5/1]
10. Python import mechanism and module mocks - [5/1]

(cclxiv) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-02-20 14:00:34 GMT

---

1. Why does subclassing change the init signature? - [7/0]
2. Find the difference between the max value and 2nd highest value within a subset of pandas columns - [6/4]
3. Should the #X format specifier really make the "0x" prefix upper-case? - [6/1]
4. How to filter a set of rows according to an indexed position? - [5/6]
5. python class attribute not updating when updated in a function - [5/2]
6. Statistics of one hot encoded columns in pandas dataframe - [5/1]
7. Print numbers serially in columns - [4/4]
8. Pad selection range in Pandas Dataframe? - [4/4]
9. Remove space delimited single characters - [4/3]
10. Python: recursive generator - [4/3]

(cclxiii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-02-13 16:17:56 GMT

---

1. Python match statement: how to use values stored in variables - [15/2]
2. Is there a C/C++ equivalent for Python's "__init__.py"? - [9/2]
3. How to compose a nested function g=fn(...(f3(f2(f1()))...) from a list of functions [f1, f2, f3,...fn] - [8/3]
4. python ABC & Multiple Inheritance - [7/1]
5. Is there a way in tkinter to resize images with the mouse? - [6/1]
6. Why does assigning to the variable after the `print` statement in a local class definition change the printed value? - [6/0]
7. Most programmatically elegant (pythonic) way to take ith element of list of lists of lists, and create lists of these ith elements - [5/4]
8. Fill column based on subsets of array - [5/3]
9. How to do one-hot-encoding based on a combination of two categorical columns using pandas? - [5/3]
10. Fast access to sums of pairwise ops - [5/2]

(cclxii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-02-06 19:37:41 GMT

---

1. multiple inheritance python Issue - [6/4]
2. Vectorize with a list of lists in Python - [6/1]
3. When can you use a name before it's defined? - [6/1]
4. How to handle odd resolutions in Unet architecture PyTorch - [6/1]
5. Create Pandas DataFrame from space separated String - [6/0]
6. Merging Dict in python with similar keys - [5/5]
7. Transpose dataframe based on column list - [5/5]
8. How to keep the only the top N values in a dataframe - [5/4]
9. How to get next available object or primary key from database in django - [4/4]
10. Transpose by grouping a Dataframe having both numeric and string variables - [4/2]

(cclxi) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-01-30 15:03:53 GMT

---

1. pip install failing on python2 - [21/3]
2. Installing pip is not working in bitbucket CI - [17/2]
3. Python Pip broken wiith sys.stderr.write(f"ERROR: {exc}") - [16/2]
4. JSON serialized object gives error with multiprocessing calls - TypeError: XXX objects not callable error - [7/0]
5. Efficient way of making time increment strings? - [6/5]
6. How to calculate the distance between two points on lines in python - [6/4]
7. How to format to n decimal places in Python - [6/3]
8. Read .pptx file from s3 - [5/1]
9. Why is iterating over a dict so slow? - [5/1]
10. Why is the output not 1 and 1? - [5/1]

(cclx) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-01-23 22:20:09 GMT

---

1. What are "soft keywords"? - [44/3]
2. Remove triplets of adjacent numbers from the list - [5/6]
3. Why the following code is printing 5 instead of 6? - [5/5]
4. Get all members discord.py - [5/2]
5. Is there an optimal way to get all combinations of values in a grouped pandas dataframe? - [5/2]
6. How to get real and imaginary parts of a column in a Pandas dataframe? - [5/1]
7. Why does math.infinity turn to a big negative integer when overwriting in some cases? - [5/0]
8. 'in' for two sorted lists with the lowest complexity - [4/9]
9. checking the enclosed tuple - [4/3]
10. Pandas groupy aggregate/apply specific functions to specific columns (np.sum, sum) - [4/3]

(cclix) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-01-16 22:31:10 GMT

---

1. Extract line from txt file using python - [10/7]
2. find the most valuable vertex among all reachable vertices - [7/3]
3. Pandas: Add an empty row after every index in a MultiIndex dataframe - [7/3]
4. PyGame window stopped showing up - [6/2]
5. Pass weights to scipy.interpolate.griddata() function - [6/0]
6. Unable to convert output to list - [5/6]
7. Double precision is different in different languages - [5/4]
8. Why is my code not showing any output? I am trying to use while loop to debug the error i was getting before it - [5/3]
9. Generating binary sequences without repetition - [5/3]
10. Python: Combining unique values in list of dicts where keys are the same? - [5/3]

(cclviii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-01-09 21:28:09 GMT

---

1. Why does popping from the original list make reversed(original_list) empty? - [25/2]
2. Printing message when class variable is called - [7/4]
3. Eigenvalues in Python: A Bug? - [7/1]
4. google dataflow job cost optimization python - [6/0]
5. When using f.read() the iteration loops per letter - [5/3]
6. operator.index with custom class instance - [5/3]
7. Sum negative row values with previous rows pandas - [5/2]
8. Getting a JSON from a stacked pandas dataframe - [5/1]
9. Print out n elements of a list each time a function is run - [4/7]
10. Maximum combined difference in array, Python - [4/5]

20 best Python questions at stackoverflow in 2020

This is the 20 most rated questions at 2020 Stack Overflow.
Between brackets: question score & answers count
Built date: 2021/01/04 19:25:02 GMT

---

1. What causes [*a] to overallocate? - [143/3]
2. Count letters in a text in the Welsh language - [78/4]
3. How do you fix "runtimeError: package fails to pass a sanity check" for numpy and pandas? - [132/9]
4. How to bypass python function definition with decorator? - [68/5]
5. Why doesn't Python give any error when quotes around a string do not match? - [67/4]
6. Why do I get this many iterations when adding to and removing from a set while iterating over it? - [69/4]
7. Why is a.insert(0,0) much slower than a[0:0]=[0]? - [63/1]
8. xlrd.biffh.XLRDError: Excel xlsx file; not supported - [55/2]
9. Does Python forbid two similarly looking Unicode identifiers? - [80/2]
10. Zipped Python generators with 2nd one being shorter: how to retrieve element that is silently consumed - [54/8]
11. regex to find a pair of adjacent digits with different digits around them - [57/4]
12. Why is this regex so slow in java - [51/4]
13. Efficient way to remove half of the duplicate items in a list - [60/12]
14. How is `x = 42; x = lambda: x` parsed? - [46/3]
15. Why is math.sqrt massively slower than exponentiation? - [51/3]
16. How can I replace the first occurrence of a character in every word? - [46/6]
17. Generate list of numbers and their negative counterparts in Python - [60/14]
18. Python round to next highest power of 10 - [47/6]
19. Discord.py Glitch or random error: TypeError: __new__() got an unexpected keyword argument 'deny_new' - [50/5]
20. Does string slicing perform copy in memory? - [40/3]

(cclvii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-01-02 13:52:44 GMT

---

1. What is __peg_parser__ in Python? - [36/3]
2. How does the following expression work in python? - [11/4]
3. How to retrieve minimum unique values from list? - [9/7]
4. Pandas Data Frame Filtering Multiple Conditions - [8/7]
5. Gradient descent using TensorFlow is much slower than a basic Python implementation, why? - [6/2]
6. How to programmatically open an application by name on macOS? - [6/2]
7. Argsort DataFrame according to columns - [5/2]
8. What is __phello__ for in Python 3? - [5/1]
9. What's the fastest way to return that indices of values of two arrays that are equal to each other? - [4/5]
10. Returning True if a value is present in an enum; returning false if not - [4/5]