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python

How to get a random value from dictionary?

August 20, 2022 by Magenaut

How can I get a random pair from a dict? I’m making a game where you need to guess a capital of a country and I need questions to appear randomly.

Categories Python, Q&A Tags dictionary, key, python, random Leave a comment

Temporarily Redirect stdout/stderr

August 20, 2022 by Magenaut

Is it possible to temporarily redirect stdout/stderr in Python (i.e. for the duration of a method)?

Categories Python, Q&A Tags python, redirect, stderr, stdout Leave a comment

How to access the ith column of a NumPy multidimensional array?

August 20, 2022 by Magenaut

Suppose I have:

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

Comparing two dataframes and getting the differences

August 20, 2022 by Magenaut

Note: the method can only compare identically-labeled DataFrame objects,
this means DataFrames with identical row and column labels.

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

Pandas: Chained assignments

August 20, 2022 by Magenaut

The chained assignment warnings / exceptions are aiming to inform the
user of a possibly invalid assignment. There may be false positives;
situations where a chained assignment is inadvertantly reported.

Categories Python, Q&A Tags chained-assignment, copy, pandas, python Leave a comment

Should I use ‘has_key()’ or ‘in’ on Python dicts?

August 20, 2022 by Magenaut

Given:

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

error: command ‘gcc’ failed with exit status 1 while installing eventlet

August 20, 2022 by Magenaut

I wanted to install eventlet on my system in order to have “Herd” for software deployment.. but the terminal is showing a gcc error:

Categories Python, Q&A Tags eventlet, python, ubuntu Leave a comment

How to truncate float values?

August 20, 2022 by Magenaut

I want to remove digits from a float to have a fixed number of digits after the dot, like:

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

Python list multiplication: [[…]]*3 makes 3 lists which mirror each other when modified

August 20, 2022 by Magenaut

Why this is happening? I don’t really understand: >>> P = [ [()]*3 ]*3 >>> P [[(), (), ()], [(), (), ()], [(), (), ()]] >>> P[0][0]=1 >>> P [[1, (), ()], [1, (), ()], [1, (), ()]] Answers: Thank you for visiting the Q&A section on Magenaut. Please note that all the answers may … Read more

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

Dictionary: Get list of values for list of keys

August 20, 2022 by Magenaut

Is there a built-in/quick way to use a list of keys to a dictionary to get a list of corresponding items?

Categories Python, Q&A Tags dictionary, key, 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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