Nick Coghlan <[EMAIL PROTECTED]> added the comment: Looks to me like the display code is getting confused by the lack of a non-None __context__ on the KeyError.
Perhaps the "raise ex from cause" syntax should be setting the __context__ on the "cause" exception if it isn't already set? Or else we could just special case this kind of weird programmer behaviour in the display code. ======================= >>> try: ... raise IOError ... except Exception as ex: ... ke = KeyError() ... ke.__context__ = ex ... raise AttributeError from ke ... Traceback (most recent call last): File "<stdin>", line 2, in <module> IOError During handling of the above exception, another exception occurred: KeyError The above exception was the direct cause of the following exception: Traceback (most recent call last): File "<stdin>", line 6, in <module> AttributeError ======================= _______________________________________ Python tracker <[EMAIL PROTECTED]> <http://bugs.python.org/issue4486> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
