[stdlib] Add mailbox.Mailbox enter/exit methods for Python 3.15 - #16149

[stdlib] Add mailbox.Mailbox enter/exit methods for Python 3.15#16149

srittau merged 3 commits into

python:mainpython/typeshed:mainfrom

aminalaee:mailbox-context-manager-py315aminalaee/typeshed:mailbox-context-manager-py315Copy head branch name to clipboard