[issue8256] input() doesn't catch _PyUnicode_AsString() exception; io.StringIO().encoding is None

[Serhiy Storchaka]

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


----------
versions: +Python 3.7 -Python 3.4

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue8256>
_______________________________________