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python

Longest increasing subsequence

August 18, 2022 by Magenaut

Given an input sequence, what is the best way to find the longest (not necessarily continuous) increasing subsequence

Categories Python, Q&A Tags algorithm, language-agnostic, python Leave a comment

Python: count repeated elements in the list

August 18, 2022 by Magenaut

expected outputs {a: 3, b: 1,c:3}

Categories Python, Q&A Tags python, python-2.7 Leave a comment

Coalesce values from 2 columns into a single column in a pandas dataframe

August 18, 2022 by Magenaut

I’m looking for a method that behaves similarly to coalesce in T-SQL. I have 2 columns (column A and B) that are sparsely populated in a pandas dataframe. I’d like to create a new column using the following rules:

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

Recursion and return statements

August 18, 2022 by Magenaut

I’m fairly new to Python and recursive functions as a whole, so pardon my ignorance.

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

Can we have assignment in a condition?

August 18, 2022 by Magenaut

Is it possible to have assignment in a condition?

Categories Python, Q&A Tags python Leave a comment

Google Colab: how to read data from my google drive?

August 18, 2022 by Magenaut

The problem is simple: I have some data on gDrive, for example at
/projects/my_project/my_data*.

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

no module named zlib

August 18, 2022 by Magenaut

First, please bear with me. I have hard time telling others my problem and this is a long thread…

Categories Python, Q&A Tags python, ubuntu-10.10, virtualenv, zlib Leave a comment

Cost of exception handlers in Python

August 18, 2022 by Magenaut

In another question, the accepted answer suggested replacing a (very cheap) if statement in Python code with a try/except block to improve performance.

Categories Python, Q&A Tags exception, micro-optimization, performance, python Leave a comment

DatabaseError: current transaction is aborted, commands ignored until end of transaction block?

August 18, 2022 by Magenaut

I got a lot of errors with the message :

Categories Python, Q&A Tags django, postgresql, psycopg2, python Leave a comment

Absolute vs. explicit relative import of Python module

August 18, 2022 by Magenaut

I’m wondering about the preferred way to import packages in a Python application. I have a package structure like this:

Categories Python, Q&A Tags package, python, python-import 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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