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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_help(self):
 """ Get context help, depending on the current step. If no help for current step was specified in scenario description file, default one will be returned. """

        current_state = self.get_current_state()
        if current_state is None:
            return statement(INTERNAL_ERROR_MSG)
        else:
            try:
                return choice(self._scenario_steps[current_state]['help'])
            except KeyError:
                return choice(self._default_help)