[issue37497] Add inspect.Signature.from_text().

[Karthikeyan Singaravelan]

Change by Karthikeyan Singaravelan <tir.karthi at gmail.com>:


----------
nosy: +yselivanov

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue37497>
_______________________________________