django-admin-tools / admin_tools /

This module contains some utils for easy deprecation warnings.
import warnings

def import_path_is_changed(old_name, new_name):
    class ImportDeprecationMixin(object):
        def __new__(cls, *args, **kwargs):
            klass = super(ImportDeprecationMixin, cls).__new__(cls)
            msg = '%s: %s is deprecated. Please use %s instead.' % (klass, old_name, new_name)
            warnings.warn(msg, DeprecationWarning)
            return klass
    return ImportDeprecationMixin
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