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# pandas.api.extensions.ExtensionArray.fillna

ExtensionArray.fillna(value, limit=None, copy=True)

  Fill NA/NaN values using the specified method.

  Parameters:
    value scalar, array-like

      If a scalar value is passed it is used to fill all missing values. Alternatively, an array-like “value” can be given. It’s expected that the array-like have the same length as ‘self’.

    limit int, default None

      The maximum number of entries where NA values will be filled.

    copy bool, default True

      Whether to make a copy of the data before filling. If False, then the original should be modified and no new memory should be allocated. For ExtensionArray subclasses that cannot do this, it is at the author’s discretion whether to ignore “copy=False” or to raise.

  Returns:
    ExtensionArray

      With NA/NaN filled.

  See also

  `api.extensions.ExtensionArray.dropna`

    Return ExtensionArray without NA values.

  `api.extensions.ExtensionArray.isna`

    A 1-D array indicating if each value is missing.

  Examples

      >>> arr = pd.array([np.nan, np.nan, 2, 3, np.nan, np.nan])
      >>> arr.fillna(0)
      <IntegerArray>
      [0, 0, 2, 3, 0, 0]
      Length: 6, dtype: Int64