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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 _validate_prepare_time(self, t, pos_c):
 """ Make sure that t is a 1D array and compatible with the C position array. """

        if hasattr(t, 'unit'):
            t = t.decompose(self.units).value

        if not isiterable(t):
            t = np.atleast_1d(t)

        t = np.ascontiguousarray(t.ravel())

        if len(t) > 1:
            if len(t) != pos_c.shape[0]:
                raise ValueError("If passing in an array of times, it must have a shape "
                                 "compatible with the input position(s).")

        return t