Python Pandas – How to supress PerformanceWarning?

问题

How I can supress a PerformanceWarning in pandas?

I've already tried warnings.simplefilter(action='ignore', category=PerformanceWarning), but it gives me a NameError: name 'PerformanceWarning' is not defined

回答1:

PerformanceWarning is not a built-in warning class so you can't call it directly in category argument. You can try the following code:

import pandas as pd
warnings.simplefilter(action='ignore', category=pd.errors.PerformanceWarning)

I have no idea how to reproduce the PerformanceWarning but i tested a similar approach to the "SettingWithCopyWarning" pandas warning and it worked. Let me know if it works.

来源：https://stackoverflow.com/questions/51521526/python-pandas-how-to-supress-performancewarning