Remove a specific tag from an HTML file.

detag.py

#!/usr/bin/env python3

import bs4
import sys

if len(sys.argv) != 3:
    print(f'usage: {sys.argv[0]} <tag> <file>')
    sys.exit(1)

with open(sys.argv[2], 'r+') as f:
    soup = bs4.BeautifulSoup(f, 'html.parser')
    for tag in soup.select(sys.argv[1]):
        tag.decompose()
    f.seek(0)
    f.write(str(soup))
    f.truncate()