🏷️ Display all unique HMTL Tags from file

tags.py

# How to use it
# > python -m tag html_file
# {'tag', 'other_tag', ...}

from bs4 import BeautifulSoup
import sys


file = sys.argv[1]

with open(file, encoding='utf-8') as f:
    html = f.read()

soup = BeautifulSoup(html, "html.parser")

print(set(tag.name for tag in soup.find_all()))