Github user davies commented on a diff in the pull request:
https://github.com/apache/spark/pull/5287#discussion_r27537301
--- Diff: python/pyspark/sql/dataframe.py ---
@@ -894,7 +888,7 @@ def agg(self, *exprs):
@dfapi
def count(self):
- """ Count the number of rows for each group.
+ """Counts the number of records for each group.
--- End diff --
Add a line to say it will return a DataFrame.
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