Github user zentol commented on a diff in the pull request:
https://github.com/apache/flink/pull/3838#discussion_r117723282
--- Diff:
flink-libraries/flink-python/src/test/python/org/apache/flink/python/api/test_main.py
---
@@ -15,18 +15,18 @@
# See the License for the specific language governing permissions and
# limitations under the License.
################################################################################
-from flink.plan.Environment import get_environment
-from flink.functions.MapFunction import MapFunction
-from flink.functions.FlatMapFunction import FlatMapFunction
+import struct
from flink.functions.FilterFunction import FilterFunction
+from flink.functions.FlatMapFunction import FlatMapFunction
+from flink.functions.GroupReduceFunction import GroupReduceFunction
+from flink.functions.MapFunction import MapFunction
--- End diff --
should be reverted.
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