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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 global_variable_dictionary(self):
 """Property for the _global_variable_dictionary field"""

        dict_copy = {}
        for key, value in self.__global_variable_dictionary.items():
            if key in self.__variable_references and self.__variable_references[key]:
                dict_copy[key] = value
            else:
                dict_copy[key] = copy.deepcopy(value)

        return dict_copy