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python

Composite primary key in django

August 11, 2022 by Magenaut

I have a legacy db table which has composite primary key. I don’t think I will be able to change the structure to include a surrogate key, as there is some code written that uses that table. And in django, I cannot use that table, as it doesn’t have a primary key(non-composite).

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

What does dtype=object mean while creating a numpy array?

August 11, 2022 by Magenaut

I was experimenting with numpy arrays and created a numpy array of strings:

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

how to change the color of a single bar if condition is True matplotlib

August 11, 2022 by Magenaut

I’ve been googleing to find if it’s possible to change only the color of a bar in a graph made by matplotlib.
Imagine this graph:

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

How does one do the equivalent of “import * from module” with Python’s __import__ function?

August 11, 2022 by Magenaut

Given a string with a module name, how do you import everything in the module as if you had called:

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

How do I compile Python 3.4 with custom OpenSSL?

August 11, 2022 by Magenaut

I have my own OpenSSL installation in a non-standard location (/my/path for the sake of this example) and I want Python 3.4 to build against that when I compile it against source. What I tried is this (directories abbreviated)

Categories Python, Q&A Tags gcc, openssl, python Leave a comment

What is the scope of a defaulted parameter in Python?

August 11, 2022 by Magenaut

When you define a function in Python with an array parameter, what is the scope of that parameter?

Categories Python, Q&A Tags default-value, function-calls, parameters, python, scope Leave a comment

Python executables: py2exe or PyInstaller?

August 11, 2022 by Magenaut

To create executable files (windows) I assume that we should use one of them:
Py2exe or PyInstaller.

Categories Python, Q&A Tags executable, python, windows Leave a comment

Find the greatest number in a list of numbers

August 11, 2022 by Magenaut

Is there any easy way or function to determine the greatest number in a python list? I could just code it, as I only have three numbers, however it would make the code a lot less redundant if I could tell the greatest with a built in function or something.

Categories Python, Q&A Tags max, numbers, python Leave a comment

Python – How can I pad a string with spaces from the right and left?

August 11, 2022 by Magenaut

I have two scenarios where I need to pad a string with whitespaces up to a certain length, in both the left and right directions (in separate cases). For instance, I have the string:

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

How to use chrome webdriver in selenium to download files in python?

August 11, 2022 by Magenaut

Based on the posts here and here I am trying to use a chrome webdriver in selenium to be able to download a file. Here is the code so far

Categories Python, Q&A Tags google-chrome, python, selenium 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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