[issue39259] poplib.POP3/POP3_SSL should reject timeout = 0 (non-blocking mode)

[Dong-hee Na]

Change by Dong-hee Na <donghee.na92 at gmail.com>:


----------
pull_requests: +17367
pull_request: https://github.com/python/cpython/pull/17959

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39259>
_______________________________________