sage

03bb8f30 -

gh-37017: cosmetic little change in topology/ (some ruff UP and PERF) a set of small fixes there ### :memo: Checklist - [x] The title is concise, informative, and self-explanatory. - [x] The description explains in detail what this PR is about. URL: https://github.com/sagemath/sage/pull/37017 Reported by: Frédéric Chapoton Reviewer(s): Frédéric Chapoton, Tobias Diez