Speed up import rlcompleter by deferring inspect and re

rlcompleter imports inspect and re at module scope, but neither is needed to import the module or to construct a Completer. Each is used in exactly one completion method:

• inspect: only in Completer._callable_postfix
• re: only in Completer.attr_matches

inspect in particular is a heavy import: it transitively pulls in dis, tokenize, and more. Because rlcompleter is imported during interactive startup (to set up tab completion via readline), this import cost is paid on every interactive session and every import rlcompleter, even though the completion methods may never run.

Linked PRs

• gh-156364

Commencez par le module rlcompleter et les points d’entrée Completer._callable_postfix et Completer.attr_matches mentionnés dans l’issue. Vérifiez le comportement de l’importation avant et après la modification, et confirmez que le comportement de complétion reste correct tout en veillant à ce que l’importation de rlcompleter n’entraîne plus le coût de dépendances inutilisées.