Python ignores warning errors

Errors are often reported during python development, but warning usually does not affect the running of the program, and sometimes it is particularly annoying. Next let's talk about how to ignore the warning error. We often encounter errors when ignoring wa python development, but warning usually does not affect the running of the program, and sometimes it is particularly annoying. Next let's take a look at how to ignore the warning error.

Before ignoring warning, let's first talk about how to generate a warning error. here we use the warnings module and look at the following code:

Import warningsdef fxn (): warnings. warn ("deprecated", DeprecationWarning) with warnings. catch_warnings (): warnings. simplefilter ("ignore") fxn ()

This produces a warning error.

How can we control the output of warning errors? Simple

Import warningswarnings. filterwarnings ("ignore ")

In this way, the output of warning errors is ignored. Easy to use ~~

Someone may ask how to ignore the output of warning errors in the command line? It is also very simple:

Python-W ignore yourscript. py

So OK.