added docstring

maropu · Jun 28, 2015 · 68eb043 · 68eb043
1 parent be5aff1
commit 68eb043
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/python/pyspark/sql/functions.py b/python/pyspark/sql/functions.py
@@ -367,7 +367,8 @@ def randn(seed=None):
 @ignore_unicode_prefix
 @since(1.5)
 def sha1(col):
-    """
+    """Returns the hex string result of SHA-1.
+
     >>> sqlContext.createDataFrame([('ABC',)], ['a']).select(sha1('a').alias('hash')).collect()
     [Row(hash=u'3c01bdbb26f358bab27f267924aa2c9a03fcfdb8')]
     """