@property
    def time_period(self):
        return self._time_period
Check if a file exists.  Returns true or false.
dataset/ETHPy150Open sympy/sympy/sympy/physics/optics/waves.py/TWave.time_period--crossover with--dataset/ETHPy150Open deanhiller/databus/webapp/play1.3.x/python/Lib/site-packages/win32/scripts/regsetup.py/FileExists