ueshin commented on a change in pull request #34197:
URL: https://github.com/apache/spark/pull/34197#discussion_r727337026
##########
File path: python/pyspark/sql/group.py
##########
@@ -53,12 +64,12 @@ class GroupedData(PandasGroupedOpsMixin):
.. versionadded:: 1.3
"""
- def __init__(self, jgd, df):
+ def __init__(self, jgd: JavaObject, df: DataFrame) -> None:
self._jgd = jgd
self._df = df
- self.sql_ctx = df.sql_ctx
+ self.sql_ctx: SQLContext = df.sql_ctx
- def agg(self, *exprs):
+ def agg(self, *exprs: Column) -> DataFrame:
Review comment:
The overload definitions are missing?
##########
File path: python/pyspark/sql/group.py
##########
@@ -14,19 +14,27 @@
# See the License for the specific language governing permissions and
# limitations under the License.
#
+from __future__ import annotations
Review comment:
We can't use `annotations` future flag yet. We still support Python 3.6
as of now.
##########
File path: python/pyspark/sql/group.py
##########
@@ -53,12 +64,12 @@ class GroupedData(PandasGroupedOpsMixin):
.. versionadded:: 1.3
"""
- def __init__(self, jgd, df):
+ def __init__(self, jgd: JavaObject, df: DataFrame) -> None:
Review comment:
nit: I don't think we need `-> None` for the initializer.
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