Unnecessary message (warning) when using %matplotlib

[nishikantparmariam]

Description

In a fresh IPython session if %matplotlib magic is ran then the message Shell is already running a gui event loop for qt5. Call with no arguments to disable the current loop. is printed which seems to be a bug because %matplotlib is ran for the first time:

In [1]: %matplotlib

Installed qt5 event loop hook.
Shell is already running a gui event loop for qt5. Call with no arguments to disable the current loop.

Version: IPython 8.12

Details

This was introduced as warning in #13864 (See here), so is present in IPython 8.11 as warning, but was later turned into print statement in IPython 8.12 in #13957 (See here)

Similar issues reported - #14006, #13978

[ccordoba12]

Closing as a duplicate of #14006.