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 file, and a loop. But how do I apply the regexp to the lines?

Thanks for all the help, and sorry for the noob question.

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')] 

Answer 2

You can try something like this :

import re regex = re.compile("f\(\s*([^,]+)\s*,\s*([^,]+)\s*\)") with open("my_file.txt") as f:     for line in f:         result = regex.search(line)