Sum all columns with a wildcard name search using Python Pandas
Question: I have a dataframe in python pandas with several columns taken from a CSV
file.

For instance, data =:

    
    
    Day P1S1 P1S2 P1S3 P2S1 P2S2 P2S3
    1   1    2    2    3    1    2
    2   2    2    3    5    4    2
    

And what I need is to get the sum of all columns which name starts with P1...
something like P1* with a wildcard.

Something like the following which gives an error:

> P1Sum = data["P1*"]

Is there any why to do this with pandas?


Answer: I found the answer.

Using the data, dataframe from the question:

    
    
    from pandas import *
    
    P1Channels = data.filter(regex="P1")
    P1Sum = P1Channels.sum(axis=1)
    

