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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_parents(obj, **kwargs):


    num_of_mro = kwargs.get("num_of_mro", 5)

    mro = getmro(obj.__class__)
    mro_string = ', '.join([extract_type(str(t)) for t in mro[:num_of_mro]])

    return "Hierarchy: {}".format(mro_string)