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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 user_defined_symbols(self):
 """Return a set of symbols that have been added to symtable after construction. I.e., the symbols from self.symtable that are not in self.no_deepcopy. Returns ------- unique_symbols : set symbols in symtable that are not in self.no_deepcopy """

        sym_in_current = set(self.symtable.keys())
        sym_from_construction = set(self.no_deepcopy)
        unique_symbols = sym_in_current.difference(sym_from_construction)
        return unique_symbols