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Python

How to implement a good __hash__ function in python

August 13, 2022 by Magenaut

The only required property is that objects which compare equal have the same hash value; it is advised to mix together the hash values of the components of the object that also play a part in comparison of objects by packing them into a tuple and hashing the tuple. Example

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

matplotlib.pyplot will not forget previous plots – how can I flush/refresh?

August 13, 2022 by Magenaut

How do you get matplotlib.pyplot to “forget” previous plots

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

ImportError: cannot import name _imaging

August 13, 2022 by Magenaut

I installed Pillow, and after I want to do:

Categories Python, Q&A Tags imaging, pip, python, python-imaging-library Leave a comment

Creating graph with date and time in axis labels with matplotlib

August 13, 2022 by Magenaut

I have my data in an array of the following structure,

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

How to implement “autoincrement” on Google AppEngine

August 13, 2022 by Magenaut

I have to label something in a “strong monotone increasing” fashion. Be it Invoice Numbers, shipping label numbers or the like.

Categories Python, Q&A Tags database, google-app-engine, python Leave a comment

rounding errors in Python floor division

August 13, 2022 by Magenaut

I know rounding errors happen in floating point arithmetic but can somebody explain the reason for this one:

Categories Python, Q&A Tags floating-point, python, python-2.7, python-3.x, rounding Leave a comment

Limit RAM usage to python program

August 13, 2022 by Magenaut

I’m trying to limit the RAM usage from a Python program to half so it doesn’t totally freezes when all the RAM is used, for this I’m using the following code which is not working and my laptop is still freezing:

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

Use only some parts of Django?

August 13, 2022 by Magenaut

I like Django, but for a particular application I would like to use only parts of it, but I’m not familiar enough with how Django works on the inside, so maybe someone can point me into the right direction as to what I have to check out.

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

Beautiful Soup cannot find a CSS class if the object has other classes, too

August 13, 2022 by Magenaut

if a page has <div class="class1"> and <p class="class1">, then soup.findAll(True, 'class1') will find them both.

Categories Python, Q&A Tags beautifulsoup, python, screen-scraping Leave a comment

What does __contains__ do, what can call __contains__ function

August 13, 2022 by Magenaut

Here is my code:

Categories Python, Q&A Tags 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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