xinrong-meng commented on code in PR #48143:
URL: https://github.com/apache/spark/pull/48143#discussion_r1767824661
##########
python/pyspark/sql/functions/builtin.py:
##########
@@ -11861,6 +11861,44 @@ def regexp_like(str: "ColumnOrName", regexp:
"ColumnOrName") -> Column:
return _invoke_function_over_columns("regexp_like", str, regexp)
+@_try_remote_functions
+def randstr(length: Union[Column, int], seed: Optional[Union[Column, int]] =
None) -> Column:
+ """Returns a string of the specified length whose characters are chosen
uniformly at random from
+ the following pool of characters: 0-9, a-z, A-Z. The random seed is
optional. The string length
+ must be a constant two-byte or four-byte integer (SMALLINT or INT,
respectively).
+
+ .. versionadded:: 4.0.0
+
+ Parameters
+ ----------
+ length : :class:`~pyspark.sql.Column` or int
+ Number of characters in the string to generate.
+ seed : :class:`~pyspark.sql.Column` or int
+ Optional random number seed to use.
+
+ Returns
+ -------
+ :class:`~pyspark.sql.Column`
+ The generated random string with the specified length.
+
+ Examples
+ --------
+ >>> from pyspark.sql import functions as sf
+ >>> df = spark.createDataFrame([('3',)], ['a'])
+ >>> df.select(sf.randstr(lit(5), lit(0)).alias('result')).show()
+ +------+
+ |result|
+ +------+
+ | ceV0P|
+ +------+
+
Review Comment:
nit: we normally don't include an empty line at the end of the docstring
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