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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 angle(self, deg=False):
 """Return the angle of a complex Timeseries Args: deg (bool, optional):
 Return angle in degrees if True, radians if False (default). Returns: angle (Timeseries):
 The counterclockwise angle from the positive real axis on the complex plane, with dtype as numpy.float64. """

        if self.dtype.str[1] != 'c':
            warnings.warn('angle() is intended for complex-valued timeseries',
                          RuntimeWarning, 1)
        da = distob.vectorize(np.angle)(self, deg)
        return _dts_from_da(da, self.tspan, self.labels)