github-actions[bot] opened a new issue, #632:
URL: https://github.com/apache/incubator-wayang/issues/632

   implement tuple types support
   
   
https://github.com/apache/incubator-wayang/blob/1e0f9e8166225176fe3022de5fbcce3dbcba96b9/python/src/pywy/tests/test_word_count.py#L57
   
   ```python
   
   #
   #  Licensed to the Apache Software Foundation (ASF) under one or more
   #  contributor license agreements.  See the NOTICE file distributed with
   #  this work for additional information regarding copyright ownership.
   #  The ASF licenses this file to You under the Apache License, Version 2.0
   #  (the "License"); you may not use this file except in compliance with
   #  the License.  You may obtain a copy of the License at
   #
   #      http://www.apache.org/licenses/LICENSE-2.0
   #
   #  Unless required by applicable law or agreed to in writing, software
   #  distributed under the License is distributed on an "AS IS" BASIS,
   #  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   #  See the License for the specific language governing permissions and
   #  limitations under the License.
   #
   
   
   import os
   import subprocess
   import time
   import pytest
   
   from importlib import resources
   from typing import Tuple
   from typing import Iterable
   from pywy.dataquanta import WayangContext
   from pywy.platforms.java import JavaPlugin
   from pywy.platforms.spark import SparkPlugin
   from pywy.tests import resources as resources_folder
   
   def fm_func(w: str) -> Iterable[str]:
       return w.split()
   
   def filter_func(w: str) -> bool:
       return w.strip() != ""
   
   def map_func(w: str) -> Tuple[str, int]:
       return (w.lower(), 1)
   
   def key_func(t: Tuple[str, int]) -> str:
       return t[0]
   
   def reduce_func(t1: Tuple[str, int], t2: Tuple[str, int]) -> Tuple[str, int]:
       return (t1[0], int(t1[1]) + int(t2[1]))
   
   def sort_func(tup: Tuple[str, int]):
       return tup[0]
   
   
   
   @pytest.fixture(scope="session")
   def config(pytestconfig):
       return pytestconfig.getoption("config")
   
   
   # TODO: implement tuple types support
   @pytest.mark.skip(reason="missing implementation for tuple types in 
operators")
   def test_wordcount(config):
       with resources.path(resources_folder, "sample_data.md") as 
resource_path, \
            resources.path(resources_folder, "wordcount_out_python.txt") as 
output_path, \
            resources.path(resources_folder, "wayang.properties") as 
configuration_file_path:
           
           configuration_file_path = config if config is not None else 
configuration_file_path
   
           proc = subprocess.Popen([
               f"mvn", f"-q", f"-f", f"wayang-api/wayang-api-json/pom.xml", 
f"exec:java",
               f"-Dexec.mainClass=org.apache.wayang.api.json.Main", 
               f"-Dwayang.configuration=file://{configuration_file_path}", 
               f"-Dexec.args=8080"], stdout=subprocess.PIPE, 
stderr=subprocess.PIPE, env=os.environ.copy(), cwd=os.getcwd())
           print(proc.stdout.readline()), print(proc.stdout.readline()), 
time.sleep(1) # wait for zio to print to output
   
           try:  
               # anonymous functions with type hints
               _ctx = WayangContext() \
                   .register({JavaPlugin, SparkPlugin}) \
                   .textfile(f"file://{resource_path}") \
                   .flatmap(lambda w: w.split(), str, str) \
                   .filter(lambda w: w.strip() != "", str) \
                   .map(lambda w: (w.lower(), 1), str, (str, int)) \
                   .reduce_by_key(lambda t: t[0], lambda t1, t2: (t1[0], 
int(t1[1]) + int(t2[1])), (str, int)) \
                   .store_textfile(f"file://{output_path}", (str, int))
               
               # named functions with  signatures
               _ctx = WayangContext() \
                   .register({JavaPlugin, SparkPlugin}) \
                   .textfile(f"file://{resource_path}") \
                   .flatmap(fm_func) \
                   .filter(filter_func) \
                   .map(map_func) \
                   .reduce_by_key(key_func, reduce_func) \
                   .sort(sort_func) \
                   .store_textfile(f"file://{output_path}", (str, int))
           finally:
               proc.kill()
   
   ```
   
   bb6b0af88acfaae28d3283c07c0a78450bbcaa3e


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