pyarrow.compute.fill_null

pyarrow.compute.fill_null(values, fill_value)[source]

Replace each null element in values with fill_value. The fill_value must be the same type as values or able to be implicitly casted to the array’s type.

This is an alias for coalesce().

Parameters:
valuesArray, ChunkedArray, or Scalar-like object

Each null element is replaced with the corresponding value from fill_value.

fill_valueArray, ChunkedArray, or Scalar-like object

If not same type as data will attempt to cast.

Returns:
resultdepends on inputs

Values with all null elements replaced

Examples

>>> import pyarrow as pa
>>> arr = pa.array([1, 2, None, 3], type=pa.int8())
>>> fill_value = pa.scalar(5, type=pa.int8())
>>> arr.fill_null(fill_value)
<pyarrow.lib.Int8Array object at ...>
[
  1,
  2,
  5,
  3
]