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from django.utils import six
def make_model_tuple(model):
"""
Takes a model or a string of the form "app_label.ModelName" and returns a
corresponding ("app_label", "modelname") tuple. If a tuple is passed in,
it's assumed to be a valid model tuple already and returned unchanged.
"""
if isinstance(model, tuple):
model_tuple = model
elif isinstance(model, six.string_types):
app_label, model_name = model.split(".")
model_tuple = app_label, model_name.lower()
else:
model_tuple = model._meta.app_label, model._meta.model_name
assert len(model_tuple) == 2, "Invalid model representation: %s" % model
return model_tuple
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