How can the max_open_warning output in matplotlib be eliminated?

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To eliminate the maxopenwarning output in matplotlib, you can set the matplotlibrc parameter "figure.maxopenwarning" to 0, either by adding the following to your script or creating/modifying the matplotlib configuration file "matplotlibrc":

import matplotlib as mpl
mpl.rcParams['figure.max_open_warning'] = 0

Alternatively, you can use the following code to suppress the warning message:

import warnings
warnings.filterwarnings("ignore", message=".*Attempting to set identical left==right results.*")

This suppresses the specific warning message that is displayed when the maximum number of open figures is reached.