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option (DataFrameWriter)

Adds an output option for the underlying data source.

Syntax

option(key, value)

Parameters

Parameter Type Description
key str The option key.
value str, int, float, or bool The option value.

Returns

DataFrameWriter

Examples

Write a DataFrame into a CSV file with the nullValue option set.

import tempfile
with tempfile.TemporaryDirectory(prefix="option") as d:
    df = spark.createDataFrame([(100, None)], "age INT, name STRING")
    df.write.option("nullValue", "Alice").mode("overwrite").format("csv").save(d)

    spark.read.schema(df.schema).format('csv').load(d).show()
    # +---+------------+
    # |age|        name|
    # +---+------------+
    # |100|Alice|
    # +---+------------+
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