Another attempt at nuking stftime.

__init__.py

import datetime
import warnings


class CleanDateTime(datetime.datetime):
    def strftime(self, *args, **kwargs):
        # warnings.warn('strftime is deprecated', DeprecationWarning,
        #               stacklevel=2)
        return super(CleanDateTime, self).strftime(*args, **kwargs)


class CleanDate(datetime.date):
    def strftime(self, *args, **kwargs):
        # warnings.warn('strftime is deprecated', DeprecationWarning,
        #               stacklevel=2)
        return super(CleanDate, self).strftime(*args, **kwargs)

datetime.datetime = CleanDateTime
datetime.date = CleanDate