core.py 文件源码

def get_fill_value(self):
        """
        Return the filling value of the masked array.

        Returns
        -------
        fill_value : scalar
            The filling value.

        Examples
        --------
        >>> for dt in [np.int32, np.int64, np.float64, np.complex128]:
        ...     np.ma.array([0, 1], dtype=dt).get_fill_value()
        ...
        999999
        999999
        1e+20
        (1e+20+0j)

        >>> x = np.ma.array([0, 1.], fill_value=-np.inf)
        >>> x.get_fill_value()
        -inf

        """
        if self._fill_value is None:
            self._fill_value = _check_fill_value(None, self.dtype)
        return self._fill_value[()]