How to use regexp on file, line by line, in Python

Question

Here is my regexp: f\\(\\s*([^,]+)\\s*,\\s*([^,]+)\\s*\\)

I\'d have to apply this on a file, line by line. The line by line is OK, simple reading from

Answer 1

The following expression returns a list; every entry of that list contains all matches of your regexp in the respective line.

>>> import re
>>> [re.findall(r'f\(\s*([^,]+)\s*,\s*([^,]+)\s*\)',line) 
            for line in open('file.txt')]