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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 _full_class_name(obj):
 """ Returns the full name of the class of the given object :param obj: Any Python object :return: The full name of the class of the object (if possible) """

    module = obj.__class__.__module__
    if module is None or module == str.__class__.__module__:
        return obj.__class__.__name__
    return module + "." + obj.__class__.__name__