Nick Coghlan added the comment: This isn't a bug, as "raise exc from None" only hides *display* of the context, it doesn't lose the record of the context entirely.
This means Walter's display code is incorrect, as it isn't checking for __suppress_context__: >>> import inspect >>> try: ... inspect.signature(lambda x:None).bind() ... except Exception as e: ... exc = e ... >>> exc.__suppress_context__ True Interestingly, neither PEP 409 *nor* PEP 415 capture the rationale for that design: retaining the full context data even when it's hidden by the default exception display routines means that you can still debug code that uses "raise X from None" inappropriately. (I thought there was an open RFE to make it easy to force the traceback module to ignore __suppress_context__ but if there is one, I can't find it) ---------- resolution: -> not a bug stage: patch review -> resolved status: open -> closed _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue24474> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
