[3.13] gh-143010: Prevent a TOCTOU issue by only calling open once (GH-143011)#143079

bitdancer merged 1 commit intopython:3.13python/cpython:3.13from

miss-islington:backport-a88d1b8-3.13miss-islington/cpython:backport-a88d1b8-3.13Copy head branch name to clipboard