[issue39712] Doc for `-X dev` option should mention PYTHONDEVMODE

[Erlend Egeberg Aasland]

Change by Erlend Egeberg Aasland <erlend.aasland at innova.no>:


Added file: https://bugs.python.org/file48927/0001-3.8-bpo-39712.patch

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39712>
_______________________________________