s310literal.py

from urllib.request import urlopen

urlopen("http://www.example.com")

command:

$ ruff check --select S310 s310literal.py
s310literal.py:3:1: S310 Audit URL open for permitted schemes. Allowing use of `file:` or custom schemes is often unexpected.
Found 1 error.

ruff rule S310 suggest

To mitigate this risk, audit all uses of URL open functions and ensure that
only permitted schemes are used (e.g., allowing http: and https: and
disallowing file: and ftp:).

but in this case there is nothing to check...