def return_value(self):
        # Note that it's a method, not a property, because it can throw
        # exceptions.
        if self._return_value:
            return self._return_value()
Get the return value. Not that this method can throw an exception.
dataset/ETHPy150Open jonathanslenders/python-prompt-toolkit/prompt_toolkit/interface.py/CommandLineInterface.return_value