How to select rows with specific values?

Question

I have a file which has a table with large number of rows and columns.

column 2 contain RF, SVM,NV
column 3 contain SMOT,SVM,NV
COLUMN4 contain chi2,fs_based_rd,withour

Has these values which repeats on time. so there will be many rows which will contain RF , smote , chi2 i want all the rows with similar values to save at a place to calculate mean for all similar values.

My file is like this:

enter image description here

I want a resulting file like this:

enter image description here

Answer 1

Assuming that the columns in your file are space-separated, you could use Python's CSV reader .

For example:

import csv

result = []

with open('file.csv') as csv_file:
    csv_content = csv.reader(csv_file, delimiter=' ')

    for csv_row in csv_content:
        if csv_row[1:4] == ['RF', 'smote', 'chi2']:
            result.append(csv_row)