'Matplotlib - pyplot is overwriting the backend agg config

I need to change the default matplotlib backend from agg to TkAgg.

I have added the line backend: TkAgg to my matplotlibrc file located at ~/.config/matplotlib/matplotlibrc.

If from the terminal I run:

>>> python
>>> import matplotlib as mpl
>>> print(mpl.get_backend())
>>> import matplotlib.pyplot as plt
>>> print(mpl.get_backend())

I get:

TkAgg
agg

So it seems that pyplot is somehow overwriting the backend I've configured. Is this expected behaviour? Is there any way I can prevent it from happening?

Interestingly, if I change the backend to WebAgg in the matplotlibrc config file, this isn't overwritten when importing pyplot.

pythonmatplotlibubuntunix


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