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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_model_label(model):
 """ Take a model class or model label and return its model label. "myapp.MyModel" "myapp.MyModel" """

    if isinstance(model, six.string_types):
        return model
    else:
        return "%s.%s" % (
            model._meta.app_label,
            model.__name__
        )