[issue23578] struct.pack error messages do not indicate which argument was invalid

[Serhiy Storchaka]

Changes by Serhiy Storchaka <storchaka+cpython at gmail.com>:


----------
assignee:  -> serhiy.storchaka
priority: normal -> low
stage: needs patch -> patch review

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue23578>
_______________________________________