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python

Local variable referenced before assignment?

August 20, 2022 by Magenaut

I am using the PyQt library to take a screenshot of a webpage, then reading through a CSV file of different URLs. I am keeping a variable feed that incremements everytime a URL is processed and therefore should increment to the number of URLs.

Categories Python, Q&A Tags python, python-2.7, python-3.x, variable-assignment Leave a comment

How to fix installation issues for PyAudio, PortAudio: “fatal error C1083: Cannot open include file: ‘portaudio.h’: No such file or directory”

August 20, 2022 by Magenaut

I am having issues installing PyAudio and portaudio.

Categories Python, Q&A Tags pip, portaudio, pyaudio, python Leave a comment

Create own colormap using matplotlib and plot color scale

August 20, 2022 by Magenaut

I have the following problem, I want to create my own colormap (red-mix-violet-mix-blue) that maps to values between -2 and +2 and want to use it to color points in my plot.
The plot should then have the colorscale to the right.

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

Remove duplicates by columns A, keeping the row with the highest value in column B

August 20, 2022 by Magenaut

I have a dataframe with repeat values in column A. I want to drop duplicates, keeping the row with the highest value in column B.

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

How to compare two dates?

August 20, 2022 by Magenaut

How would I compare two dates to see which is later, using Python?

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

Best practice for using assert?

August 20, 2022 by Magenaut

Is there a performance or code maintenance issue with using assert as part of the standard code instead of using it just for debugging purposes?

Categories Python, Q&A Tags assert, assertion, python, raise Leave a comment

How to create a GUID/UUID in Python

August 20, 2022 by Magenaut

How do I create a GUID in Python that is platform independent? I hear there is a method using ActivePython on Windows but it’s Windows only because it uses COM. Is there a method using plain Python?

Categories Python, Q&A Tags guid, python, uniqueidentifier, uuid Leave a comment

Run a Python script from another Python script, passing in arguments

August 20, 2022 by Magenaut

I want to run a Python script from another Python script. I want to pass variables like I would using the command line. For example, I would run my first script that would iterate through a list of values (0,1,2,3) and pass those to the 2nd script script2.py 0 then script2.py 1, etc. I found … Read more

Categories Python, Q&A Tags python Leave a comment

In Python, how do I convert all of the items in a list to floats?

August 20, 2022 by Magenaut

I have a script which reads a text file, pulls decimal numbers out of it as strings and places them into a list.

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

Python: Finding differences between elements of a list

August 20, 2022 by Magenaut

Given a list of numbers, how does one find differences between every (i)-th elements and its (i+1)-th?

Categories Python, Q&A Tags list, 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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