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python

Getting Python’s unittest results in a tearDown() method

August 13, 2022 by Magenaut

Is it possible to get the results of a test (i.e. whether all assertions have passed) in a tearDown() method? I’m running Selenium scripts, and I’d like to do some reporting from inside tearDown(), however I don’t know if this is possible.

Categories Python, Q&A Tags nose, python, unit-testing Leave a comment

How can I create a random number that is cryptographically secure in python?

August 13, 2022 by Magenaut

I’m making a project in python and I would like to create a random number that is cryptographically secure, How can I do that? I have read online that the numbers generated by the regular randomizer are not cryptographically secure, and that the function os.urandom(n) returns me a string, and not a number.

Categories Python, Q&A Tags cryptography, python, random Leave a comment

NumPy/OpenCV 2: how do I crop non-rectangular region?

August 13, 2022 by Magenaut

I have a set of points that make a shape (closed polyline). Now I want to copy/crop all pixels from some image inside this shape, leaving the rest black/transparent. How do I do this?

Categories Python, Q&A Tags image-processing, numpy, opencv, python Leave a comment

openpyxl – adjust column width size

August 13, 2022 by Magenaut

I have following script which is converting a CSV file to an XLSX file, but my column size is very narrow. Each time I have to drag them with mouse to read data. Does anybody know how to set column width in openpyxl?

Categories Python, Q&A Tags openpyxl, python Leave a comment

Sorting a set of values

August 13, 2022 by Magenaut

I have values like this:

Categories Python, Q&A Tags python Leave a comment

What is a maximum number of arguments in a Python function?

August 13, 2022 by Magenaut

It’s somewhat common knowledge that Python functions can have a maximum of 256 arguments. What I’m curious to know is if this limit applies to *args and **kwargs when they’re unrolled in the following manner:

Categories Python, Q&A Tags arguments, function, language-features, limit, python Leave a comment

How to annotate end of lines using python and matplotlib?

August 13, 2022 by Magenaut

With a dataframe and basic plot such as this:

Categories Python, Q&A Tags matplotlib, python Leave a comment

Parallel Processing in python

August 13, 2022 by Magenaut

Whats a simple code that does parallel processing in python 2.7? All the examples Ive found online are convoluted and include unnecessary codes.

Categories Python, Q&A Tags parallel-processing, python Leave a comment

Weighted percentile using numpy

August 13, 2022 by Magenaut

Is there a way to use the numpy.percentile function to compute weighted percentile? Or is anyone aware of an alternative python function to compute weighted percentile?

Categories Python, Q&A Tags numpy, percentile, python, weighted Leave a comment

Create Column with ELIF in Pandas

August 13, 2022 by Magenaut

Question

Categories Python, Q&A Tags pandas, python Leave a comment
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  1. michealSmith07 on Is there a way to dynamically refresh the less command?August 21, 2022

    That is a very nice post. I like this post.

  2. anonymous on Fix libwacom9 dependency issue when upgrade DebianJune 27, 2022

    saved my day!! Thanks for the help…

  3. sreedhar on Fix libwacom9 dependency issue when upgrade DebianMay 10, 2022

    Thanks its working

  4. saintnick on Fix libwacom9 dependency issue when upgrade DebianMay 10, 2022

    remove libwacom2 worked for me as well

  5. ranafoul on Fix libwacom9 dependency issue when upgrade DebianApril 22, 2022

    apt remove libwacom2 helped on kali 2022.01. gr8

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