compare two different files line by line in Python

import difflib
from difflib import HtmlDiff

with open('show_run_SW-VSS_2019-02-05.txt') as f1:
    f1_text = f1.read()
with open('show_run_SW-VSS_2019-02-01.txt') as f2:
    f2_text = f2.read()



delta_html = HtmlDiff().make_file(f1_text.splitlines(),
                                  f2_text.splitlines())

with open('diff22.html', 'w') as f:
     f.write(delta_html)