[GitHub] [beam] damccorm opened a new issue, #20232: Python installation fails if grpc_tools is not installed

[GitBox <gi...@apache.org>]

damccorm opened a new issue, #20232:
URL: https://github.com/apache/beam/issues/20232

   When installing from master branch, I'm getting an exception below. Looks like the ImportError exception handling throws an exception itself. I'll manually install grpc_tools and try again but the handling of ImportError has issues.
    
   ```
   Traceback (most recent call last):
         File "/root/apache-beam-custom/packages/beam/sdks/python/gen_protos.py", line 292, in generate_proto_files
           from grpc_tools import protoc
       ModuleNotFoundError: No module named 'grpc_tools'
       
       During handling of the above exception, another exception occurred:
       
       Traceback (most recent call last):
         File "/opt/conda/lib/python3.7/multiprocessing/process.py", line 297, in _bootstrap
           self.run()
         File "/opt/conda/lib/python3.7/multiprocessing/process.py", line 99, in run
           self._target(*self._args, **self._kwargs)
         File "/root/apache-beam-custom/packages/beam/sdks/python/gen_protos.py", line 378, in _install_grpcio_tools_and_generate_proto_files
           generate_proto_files(force=force)
         File "/root/apache-beam-custom/packages/beam/sdks/python/gen_protos.py", line 315, in generate_proto_files
           protoc_gen_mypy = _find_protoc_gen_mypy()
         File "/root/apache-beam-custom/packages/beam/sdks/python/gen_protos.py", line 233, in _find_protoc_gen_mypy
           (fname, ', '.join(search_paths)))
       RuntimeError: Could not find protoc-gen-mypy in /root/apache-beam-custom/bin, /root/apache-beam-custom/bin, /usr/local/bin, /opt/conda/bin, /usr/local/sbin, /usr/local/bin, /usr/sbin, /usr/bin, /sbin, /bin
   ```
   
   Imported from Jira [BEAM-9508](https://issues.apache.org/jira/browse/BEAM-9508). Original Jira may contain additional context.
   Reported by: davidyan.


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