pyspark.sql.functions.log2

pyspark.sql.functions.log2(col)

Returns the base-2 logarithm of the argument.

New in version 1.5.0.

Changed in version 3.4.0: Supports Spark Connect.

Parameters

colColumn or str

a column to calculate logariphm for.

Returns

Column

logariphm of given value.

Examples

>>> df = spark.createDataFrame([(4,)], ['a'])
>>> df.select(log2('a').alias('log2')).show()
+----+
|log2|
+----+
| 2.0|
+----+