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Python

Python – Using the Multiply Operator to Create Copies of Objects in Lists

August 15, 2022 by Magenaut

In Python, if I multiply of list of objects by an integer, I get a list of references to that object, e.g.: >>> a = [[]] * 3 >>> a [[], [], []] >>> a[0].append(1) >>> a [[1], [1], [1]] If my desired behavior is to create a list of copies of the original object … Read more

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

Looping from 1 to infinity in Python

August 15, 2022 by Magenaut

In C, I would do this:

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

Why “numpy.any” has no short-circuit mechanism?

August 15, 2022 by Magenaut

I don’t understand why a so basic optimization has not yet be done:

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

Pandas interpolate within a groupby

August 15, 2022 by Magenaut

I’ve got a dataframe with the following information:

Categories Python, Q&A Tags group-by, interpolation, pandas, python Leave a comment

How to create a decorator that can be used either with or without parameters?

August 15, 2022 by Magenaut

I’d like to create a Python decorator that can be used either with parameters:

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

Binary numpy array to list of integers?

August 15, 2022 by Magenaut

I have a binary array, and I would like to convert it into a list of integers, where each int is a row of the array.

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

Why compile Python code?

August 15, 2022 by Magenaut

Why would you compile a Python script? You can run them directly from the .py file and it works fine, so is there a performance advantage or something?

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

How do you merge images into a canvas using PIL/Pillow?

August 15, 2022 by Magenaut

I’m not familiar with PIL, but I know it’s very easy to put a bunch of images into a grid in ImageMagick.

Categories Python, Q&A Tags canvas, image, pillow, python, python-imaging-library Leave a comment

How do I add default parameters to functions when using type hinting?

August 15, 2022 by Magenaut

If I have a function like this:

Categories Python, Q&A Tags python, python-typing, type-hinting Leave a comment

python floating number

August 15, 2022 by Magenaut

Python now uses David Gay’s algorithm for finding the shortest floating point representation that doesn’t change its value. This should help mitigate some of the confusion surrounding binary floating point numbers.

Categories Python, Q&A Tags floating-accuracy, floating-point, numerical, 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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