Bug summary

I am using a Jupyter notebook in VS Code Version: 1.93.1. on MacOS Ventura 13.4.1 and Python 3.12.5

With matplotlib<=3.9.0, I can plot visualizations inline within VS Code. The reported backend is by default inline and everything is fine.

Starting with version 3.9.1, the default backend apparently switched to macosx. When I try to plot something now, a new Python window pops up, but no plot is created unless I add plt.show().

Is this the intended behavior? It breaks essentially all of my notebooks because I would have to go in and add %matplotlib inline to make things work again.

Code for reproduction

import matplotlib.pyplot as plt

import matplotlib

print(matplotlib.get_backend())

plt.plot([0, 1, 2], [1, 2, 3])

Actual outcome

With matplotlib<=3.9.0:

With matplotlib>3.9.0:

Expected outcome

Default backend should be inline in matplotlib>3.9.0.

Additional information

No response

Operating system

MacOS Ventura 13.4.1

Matplotlib Version

3.9.0, 3.9.1, 3.9.2

Matplotlib Backend

inline, macosx

Python version

3.12.5

Jupyter version

6.5.1

Installation

pip