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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 run_timeit(self, stmt, setup):
 """ Create the function call statement as a string used for timeit. """

        _timer = timeit.Timer(stmt=stmt, setup=setup)
        trials = _timer.repeat(self.timeit_repeat, self.timeit_number)
        self.time_average_seconds = sum(trials) / len(trials) / self.timeit_number
        # Convert into reasonable time units
        time_avg = convert_time_units(self.time_average_seconds)
        return time_avg