def __rsub__(self, other: Any) -> float:
    '\n        Used heavily for assertAlmostEqual.\n\n        NOTE: This is not necessary in python 3.7+.\n        '
    if (not isinstance(other, float)):
        raise TypeError('Metrics.__rsub__ is intentionally limited to floats.')
    return (other - self.value())
Used heavily for assertAlmostEqual.

NOTE: This is not necessary in python 3.7+.
def __rsub__(self, other: Any) -> float:
    '\n        Used heavily for assertAlmostEqual.\n\n        NOTE: This is not necessary in python 3.7+.\n        '
    if (not isinstance(other, float)):
        raise TypeError('Metrics.__rsub__ is intentionally limited to floats.')
    return (other - self.value())