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python

Preserve custom attributes when pickling subclass of numpy array

August 12, 2022 by Magenaut

I’ve created a subclass of numpy ndarray following the numpy documentation. In particular, I have added a custom attribute by modifying the code provided.

Categories Python, Q&A Tags arrays, numpy, pickle, python, python-multiprocessing Leave a comment

Equivalent C++ to Python generator pattern

August 12, 2022 by Magenaut

I’ve got some example Python code that I need to mimic in C++. I do not require any specific solution (such as co-routine based yield solutions, although they would be acceptable answers as well), I simply need to reproduce the semantics in some manner.

Categories Python, Q&A Tags c#, coroutine, generator, python, yield Leave a comment

Why subprocess.Popen doesn’t work when args is sequence?

August 12, 2022 by Magenaut

I’m having a problem with subprocess.Popen when args parameter is given as sequence.

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

Re.match() returns always none

August 12, 2022 by Magenaut

I feel kind of stupid but it does not work:

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

Is it possible to change a function’s default parameters in Python?

August 12, 2022 by Magenaut

In Python, is it possible to redefine the default parameters of a function at runtime?

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

What’s the difference between io.open() and os.open() on Python?

August 12, 2022 by Magenaut

I realised that the open() function I’ve been using was an alias to io.open() and that importing * from os would overshadow that.

Categories Python, Q&A Tags io, module, operating-system, python Leave a comment

Saving images in Python at a very high quality

August 12, 2022 by Magenaut

How can I save Python plots at very high quality?

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

pysqlite: Placeholder substitution for column or table names?

August 12, 2022 by Magenaut

Using pysqlite I am making a procedure to do something with some data. The same kind of operation is done on similar fields in multiple tables and columns, so I thought I could parameterize the sql statement as shown below:

Categories Python, Q&A Tags pysqlite, python, sql, sqlite Leave a comment

google search with python requests library

August 12, 2022 by Magenaut

(I’ve tried looking but all of the other answers seem to be using urllib2)

Categories Python, Q&A Tags google-search, google-search-api, python, python-requests Leave a comment

Python append multiple files in given order to one big file

August 12, 2022 by Magenaut

I have up to 8 seperate Python processes creating temp files in a shared folder. Then I’d like the controlling process to append all the temp files in a certain order into one big file. What’s the quickest way of doing this at an os agnostic shell level?

Categories Python, Q&A Tags append, file, 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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