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python

How do I read and write CSV files with Python?

August 22, 2022 by Magenaut

I have a file example.csv with the contents

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

Python Dictionary Comprehension

August 22, 2022 by Magenaut

Is it possible to create a dictionary comprehension in Python (for the keys)?

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

What is Truthy and Falsy? How is it different from True and False?

August 22, 2022 by Magenaut

I just learned there are truthy and falsy values in python which are different from the normal True and False.

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

How to pad zeroes to a string?

August 22, 2022 by Magenaut

What is a Pythonic way to pad a numeric string with zeroes to the left, i.e. so the numeric string has a specific length?

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

Importing installed package from script raises “AttributeError: module has no attribute” or “ImportError: cannot import name”

August 22, 2022 by Magenaut

I have a script named requests.py that imports the requests package. The script either can’t access attributes from the package, or can’t import them. Why isn’t this working and how do I fix it?

Categories Python, Q&A Tags exception, python, python-module, shadowing Leave a comment

Lazy Method for Reading Big File in Python?

August 22, 2022 by Magenaut

I have a very big file 4GB and when I try to read it my computer hangs.
So I want to read it piece by piece and after processing each piece store the processed piece into another file and read next piece.

Categories Python, Q&A Tags file-io, generator, python Leave a comment

Windows path in Python

August 22, 2022 by Magenaut

What is the best way to represent a Windows directory, for example "C:meshesas"? I have been trying to modify a script but it never works because I can’t seem to get the directory right, I assume because of the '' acting as escape character?

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

How do I select rows from a DataFrame based on column values?

August 22, 2022 by Magenaut

How can I select rows from a DataFrame based on values in some column in Pandas?

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

Correct way to write line to file?

August 22, 2022 by Magenaut

How do I write a line to a file in modern Python? I heard that this is deprecated:

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

What is the difference between re.search and re.match?

August 22, 2022 by Magenaut

What is the difference between the search() and match() functions in the Python re module?

Categories Python, Q&A Tags match, python, regex, search 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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