How to fix the bug “Expected "required", "optional", or "repeated".”？

[amazingzby]

When I use the commond " protoc object_detection/protos/*.proto --python_out=.",
The output:
object_detection/protos/anchor_generator.proto:11:3: Expected "required", "optio nal", or "repeated".
object_detection/protos/anchor_generator.proto:11:32: Missing field number.

[humayun]

You need to download protoc version 3.3 (already compiled). Used protoc inside bin directory to run this command like this:
tensorflow$ mkdir protoc_3.3
tensorflow$ cd protoc_3.3
tensorflow/protoc_3.3$ wget wget https://github.com/google/protobuf/releases/download/v3.3.0/protoc-3.3.0-linux-x86_64.zip
tensorflow/protoc_3.3$ chmod 775 protoc-3.3.0-linux-x86_64.zip
tensorflow/protoc_3.3$ unzip protoc-3.3.0-linux-x86_64.zip
tensorflow/protoc_3.3$ cd ../models/
tensorflow/protoc_3.3$ /home/humayun/tensorflow/protoc_3.3/bin/protoc object_detection/protos/*.proto --python_out=.

It will work hopefullly.

Humayun

[amazingzby]

Thank you.

[shresthamalik]

This is the most useful post on this issue. Thank you for posting.

[aselle]

Closing as a duplicate.

[jahdiel]

Thanks for the help, This should be posted in the installation guide readme.

[changquanyou]

Thanks,it is helpful

[saikishor]

You need to download protoc version 3.3 (already compiled). Use the protoc executable inside bin directory to run the commands like this:
tensorflow$ mkdir protoc_3.3
tensorflow$ cd protoc_3.3
tensorflow/protoc_3.3$ wget wget https://github.com/google/protobuf/releases/download/v3.3.0/protoc-3.3.0-linux-x86_64.zip
tensorflow/protoc_3.3$ chmod 775 protoc-3.3.0-linux-x86_64.zip
tensorflow/protoc_3.3$ unzip protoc-3.3.0-linux-x86_64.zip
tensorflow/protoc_3.3$ cd ../models/research/
tensorflow/models/research$ /home/saikishor/tensorflow/protoc_3.3/bin/protoc object_detection/protos/*.proto --python_out=.

It might hopefullly work.

[threshold2000]

Thanks a lot. It helps!

[P-a-i-s]

Could you be clear and specific:
Used protoc inside bin directory to run this -- which bin directory is this?

What path should this be in?
tensorflow$ mkdir protoc_3.3
tensorflow$ cd protoc_3.3
tensorflow/protoc_3.3$ wget wget https://github.com/google/protobuf/releases/download/v3.3.0/protoc-3.3.0-linux-x86_64.zip....

[saikishor]

@P-a-i-s There we are pointing out to the protoc executable in the bin folder of protoc_3.3. As we do here in the below command:
/home/saikishor/tensorflow/protoc_3.3/bin/protoc object_detection/protos/*.proto --python_out=.

I have updated my above comment as well.

In my case, I have my directories something like this:
+~/tensorflow
-models
-protoc_3.3

[P-a-i-s]

/home/ubuntu/tensorflow/protoc_3.5/bin/protoc object_detection/protos/*.proto --python_out=.
@saikishor - worked like a charm - thanks a ton for the speedy response and clarity :)