gh-82002: IDLE completion namespace fix by taleinat · Pull Request #15207 · python/cpython

Merge conflict in autocomplete.py: __init__ parameter tags added for #25708, this adds namespace. Put latter after former because tags passed positionally in editor. Should make both or all 3 keyword-only in separate patch and fix call.

Merge conflict in run.py: changed code made conditional on not testing by #24302, which added tests for respecting excepthook.