I am using python version 2.7.6 and grpcio version 1.12.0. I have a proto with message definition containing a enum something like this

```
enum Test {
    first 0;
    reserved 1;
    second 2;
}

```

Now when I try to compile using command 

```
python -m grpc_tools.protoc -I./ --python_out=. --grpc_python_out=. mydata.proto

```

I get an error message something like this

```
Missing numeric value for enum constant

```

Is it because of the python and grpcio version?