Python 3 Segmentation Fault

["J.Arun Mani" <J.ArunMani@protonmail.com>]

Hello.

I'm using Debian Testing (upgraded from Debian 10). Today I started Python 3, but it was not able to interpret any commands from stdin and resulted in Segmentation Fault. Luckily modules (python3 -m <module>) and files (python3 <file>) works fine though.

Observed:

 $ python3

 Python 3.8.3rc1 (default, Apr 30 2020, 07:33:30)

 [GCC 9.3.0] on linux

 Type "help", "copyright", "credits" or "license" for more information.

 >>> print

 <No output, nothing>

 <Press any key>

 Segmentation fault

Screen capture that could help : https://www.dropbox.com/s/9w941t93ymem1x1/python3_issue-2020-08-04_19.38.28.mp4?dl=0 

Some additional info:

 1. I tried running a file that takes input from user (using input function), it also didn't work. So I think something regarding standard input has broken.

 2. Python 2 also has the exact, same issue. So both Pythons face the problem !

I have IPython installed, which works fine without any issue.

The very recent installations I made :

Installed Emacs (~ 2 days ago)

Installed and removed Neovim (~ 1 day ago)

I tried reinstalling Python by : sudo apt reinstall python3

But it didn't fix the issue.

Though I hardly use live session of Python 3 (I use IPython for live sessions), having a broken Python 3 scares me. Any help regarding the issue is greatly appreciated. :)

Thanks

J Arun Mani