Ammar Askar <am...@ammaraskar.com> added the comment:
Can re-create, this is because the **kwargs handling inside unicode format only performs a lookup when needed https://github.com/python/cpython/blob/c4cacc8c5eab50db8da3140353596f38a01115ca/Objects/stringlib/unicode_format.h#L393-L424 and doesn't eagerly check it like here https://github.com/python/cpython/blob/ffd9753a944916ced659b2c77aebe66a6c9fbab5/Objects/call.c#L985-L1010 This might not be worth fixing though because of the very common pattern of "{abcd}".format(**locals()) This would take a pretty dramatic performance hit for a relatively uncommon edge case. ---------- nosy: +ammar2, eric.smith, serhiy.storchaka, vstinner _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue39694> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
