Skip to content

Magenaut

  • Home
  • Topics
    • Notes
    • Tutorial
    • Bug fixing
    • Extension
    • Server
  • Q&A
  • Privacy Policy
  • About

dataframe

Pandas filtering for multiple substrings in series

August 21, 2022 by Magenaut

I need to filter rows in a pandas dataframe so that a specific string column contains at least one of a list of provided substrings. The substrings may have unusual / regex characters. The comparison should not involve regex and is case insensitive.

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

Groupby value counts on the dataframe pandas

August 21, 2022 by Magenaut

I have the following dataframe:

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

how to sort pandas dataframe from one column

August 21, 2022 by Magenaut

I have a data frame like this:

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

What is the difference between using squared brackets or dot to access a column?

August 21, 2022 by Magenaut

In both the bellow cases:

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

Writing a pandas DataFrame to CSV file

August 21, 2022 by Magenaut

I have a dataframe in pandas which I would like to write to a CSV file.

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

Remove pandas rows with duplicate indices

August 21, 2022 by Magenaut

How to remove rows with duplicate index values?

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

Converting a Pandas GroupBy output from Series to DataFrame

August 21, 2022 by Magenaut

I’m starting with input data like this

Categories Python, Q&A Tags dataframe, multi-index, pandas, pandas-groupby, python Leave a comment

Error: pandas hashtable keyerror

August 21, 2022 by Magenaut

I have successfully read a csv file using pandas. When I am trying to print the a particular column from the data frame i am getting keyerror. Hereby i am sharing the code with the error.

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

Using Pandas to pd.read_excel() for multiple worksheets of the same workbook

August 21, 2022 by Magenaut

I have a large spreadsheet file (.xlsx) that I’m processing using python pandas. It happens that I need data from two tabs (sheets) in that large file. One of the tabs has a ton of data and the other is just a few square cells.

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

How to add pandas data to an existing csv file?

August 21, 2022 by Magenaut

I want to know if it is possible to use the pandas to_csv() function to add a dataframe to an existing csv file. The csv file has the same structure as the loaded data.

Categories Python, Q&A Tags csv, dataframe, pandas, python Leave a comment
Older posts
Newer posts
← Previous Page1 … Page8 Page9 Page10 … Page36 Next →
  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

.net ajax asp.net asp.net-core asp.net-mvc asp.net-mvc-3 asp.net-mvc-4 asp.net-web-api bash c# command-line css custom-post-types custom-taxonomy dataframe dictionary django entity-framework functions gridview html iis javascript jquery json linux list matplotlib numpy pandas php plugin-development plugins posts python python-2.7 python-3.x security shell shell-script sql string vb.net webforms wp-query

© 2026 Magenaut • Built with GeneratePress