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Python

When to use sys.path.append and when modifying %PYTHONPATH% is enough

August 15, 2022 by Magenaut

So, it turned out i was missing a semi-colon from my PYTHONPATH definition. But this only got me so far. for some reason, my script did NOT work as a scheduled task (on WinXP) until I explicitly added a directory from PYTHONPATH to the top of my script.

Categories Python, Q&A Tags environment-variables, python Leave a comment

Python decompression relative performance?

August 15, 2022 by Magenaut

TLDR; Of the various compression algorithms available in python gzip, bz2, lzma, etc, which has the best decompression performance?

Categories Python, Q&A Tags bz2, gzip, lzma, performance, python Leave a comment

Recursive list comprehension in Python?

August 15, 2022 by Magenaut

Is it possible to define a recursive list comprehension in Python?

Categories Python, Q&A Tags list-comprehension, python Leave a comment

Cross-platform subprocess with hidden window

August 15, 2022 by Magenaut

I want to open a process in the background and interact with it, but this process should be invisible in both Linux and Windows. In Windows you have to do some stuff with STARTUPINFO, while this isn’t valid in Linux:

Categories Python, Q&A Tags cross-platform, linux, python, subprocess, windows Leave a comment

Why does numpy.zeros takes up little space

August 15, 2022 by Magenaut

I am wondering why numpy.zeros takes up such little space?

Categories Python, Q&A Tags arrays, cython, numpy, python Leave a comment

Lookup Values by Corresponding Column Header in Pandas 1.2.0 or newer

August 15, 2022 by Magenaut

The operation pandas.DataFrame.lookup is “Deprecated since version 1.2.0”, and has since invalidated a lot of previous answers.

Categories Python, Q&A Tags dataframe, pandas, python Leave a comment

use matplotlib color map for color cycle

August 15, 2022 by Magenaut

If I create colors by e.g:

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

Is there an easy way to make sessions timeout in flask?

August 15, 2022 by Magenaut

I’m building a website with flask where users have accounts and are able to login.
I’m using flask-principal for the loging in part and the role management.
Is there a way of making the user’s session expire after say 5 minutes or 10 minutes?
I was not able to find that in flask documentation or, flask-principal’s documentation.

Categories Python, Q&A Tags flask, python, session, timeout Leave a comment

How to add a custom loglevel to Python’s logging facility

August 15, 2022 by Magenaut

I’d like to have loglevel TRACE (5) for my application, as I don’t think that debug() is sufficient. Additionally log(5, msg) isn’t what I want. How can I add a custom loglevel to a Python logger?

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

Adding a y-axis label to secondary y-axis in matplotlib

August 15, 2022 by Magenaut

I can add a y label to the left y-axis using plt.ylabel, but how can I add it to the secondary y-axis?

Categories Python, Q&A Tags matplotlib, 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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