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# pandas.Index.hasnans

Index.hasnans

  Return True if there are any NaNs.

  Enables various performance speedups.

  Returns:
    bool

  See also

  `Index.isna`

    Detect missing values.

  `Index.dropna`

    Return Index without NA/NaN values.

  `Index.fillna`

    Fill NA/NaN values with the specified value.

  Examples

      >>> s = pd.Series([1, 2, 3], index=["a", "b", None])
      >>> s
      a    1
      b    2
      None 3
      dtype: int64
      >>> s.index.hasnans
      True