python - How to bypass pyplot contour function error "No contour levels were found within the data range"

Question

For a contourless plot, matplotlib.pyplot.contour correctly throws the error

UserWarning: No contour levels were found within the data range.

but how can I make my script bypass this error and continue running the next lines of code (whily maybe just throwing a blank plot anyway) without completely aborting the script?

question from:https://stackoverflow.com/questions/65602473/how-to-bypass-pyplot-contour-function-error-no-contour-levels-were-found-within

Answer 1

As stated in the comments above, this is just a warning and your code should not stop here. If it's OK to show an empty plot in this case and you just want to suppress the warning you can do it as follows:

import matplotlib.pyplot as plt
import warnings

with warnings.catch_warnings():
    warnings.filterwarnings("ignore", message="No contour levels were found within the data range.") 
    plt.contour([[1,1],[1,1]])