My impression is that the original reason for PendingDeprecationWarning versus DeprecationWarning was to be off by default until the last release before removal. But having DeprecationWarnings on by default was found to be too obnoxious and it too is off by default. So do we still need PendingDeprecationWarnings? My impression is that it is mostly not used, as it is a nuisance to remember to change from one to the other. The deprecation message can always indicate the planned removal time. I searched the Developer's Guide for both deprecation and DeprecationWarning and found nothing.

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Terry Jan Reedy

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