Is there a method to compile a .proto message within a python script?

[Taran Deshpande]

 Hello,

I want to write a python script that will parse a proto message without having the definition compiled beforehand. Basically, I want the script to take in a .proto definition as an argument at runtime and compile it using protoc so the script can parse any protobuf message. Is there a python module available to invoke protoc?

[Austin Bennett]

Sometimes I use python rather than protoc to generate, for example:

python -m grpc.tools.protoc \
    --proto_path=. \
    --proto_path=${GOOGLEAPIS_DIR} \
    --python_out=python \
    --grpc_python_out=python \
    ${PROTO_NAME}.proto

So, crudely wondering whether you could create within your script using grpc.tools.protoc.  Haven't considered doing this previously -- so merely a pointer to one area that might (or not) be useful to explore --

Good luck!

On Tue, Jul 7, 2020 at 9:44 AM Taran Deshpande <td...@umich.edu> wrote:

 Hello,

I want to write a python script that will parse a proto message without having the definition compiled beforehand. Basically, I want the script to take in a .proto definition as an argument at runtime and compile it using protoc so the script can parse any protobuf message. Is there a python module available to invoke protoc?

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