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python

How can I find the union of two Django querysets?

August 11, 2022 by Magenaut

I’ve got a Django model with two custom manager methods. Each returns a different subset of the model’s objects, based on a different property of the object.

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

What does “Symbol not found / Expected in: flat namespace” actually mean?

August 11, 2022 by Magenaut

When I import a module I built, I get this boost-python related error:

Categories Python, Q&A Tags c#, import, importerror, namespaces, python Leave a comment

Python Math – TypeError: ‘NoneType’ object is not subscriptable

August 11, 2022 by Magenaut

I’m making a small program for math (no particular reason, just kind of wanted to) and I ran into the error “TypeError: ‘NoneType’ object is not subscriptable.

Categories Python, Q&A Tags in-place, math, python, sorting Leave a comment

Remove name, dtype from pandas output of dataframe or series

August 11, 2022 by Magenaut

I have output file like this from a pandas function.

Categories Python, Q&A Tags dataframe, output-formatting, pandas, python, series Leave a comment

Python list slice syntax used for no obvious reason

August 11, 2022 by Magenaut

I occasionally see the list slice syntax used in Python code like this:

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

Image transformation in OpenCV

August 11, 2022 by Magenaut

This question is related to this question: How to remove convexity defects in sudoku square

Categories Python, Q&A Tags computer-vision, opencv, python, wolfram-mathematica Leave a comment

Python Class Members Initialization

August 11, 2022 by Magenaut

I have just recently battled a bug in Python. It was one of those silly newbie bugs, but it got me thinking about the mechanisms of Python (I’m a long time C++ programmer, new to Python). I will lay out the buggy code and explain what I did to fix it, and then I have a couple of questions…

Categories Python, Q&A Tags class, initialization, python Leave a comment

Override module method where from…import is used

August 11, 2022 by Magenaut

I have a problem overriding the method where from...import statement is used. Some example to illustrate the problem:

Categories Python, Q&A Tags python Leave a comment

“is” operator result: What is happening?

August 11, 2022 by Magenaut

I was quite surprised when [] is not [] evaluated to True. What is happening in this code? What really not and is statements are doing? Answers: Thank you for visiting the Q&A section on Magenaut. Please note that all the answers may not help you solve the issue immediately. So please treat them as … Read more

Categories Python, Q&A Tags python Leave a comment

Row titles for matplotlib subplot

August 11, 2022 by Magenaut

In matplotlib, Is it possible to set a a separate title for each row of subplots in addition to the title set for the entire figure and the title set for each individual plot? This would correspond to the orange text in the figure below.
enter image description here

Categories Python, Q&A Tags matplotlib, python, subplot 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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