4.2 python下protobuf体验

1. 安装

python -m pip install grpcio #安装grpc
python -m pip install grpcio-tools #安装grpc tools

2. 先体验protobuf3

protobuf3 是有自己专门的定义格式的 - 门槛

syntax = "proto3";
message HelloRequest {
  string name = 1;
}

3. 生成proto的python文件

python -m grpc_tools.protoc --python_out=. --grpc_python_out=. -I. helloworld.proto

4. 查看protobuf生成的代码

from grpc_test import helloworld_pb2
request = helloworld_pb2.HelloRequest()
request.name = "bobby"
req_str = request.SerializeToString()
print(req_str)
request2 = helloworld_pb2.HelloRequest()
request2.ParseFromString(req_str)
print(request2.name)

5. 对比一下protobuf生成的效果

from grpc_test import helloworld_pb2
request = helloworld_pb2.HelloRequest()
request.name = "bobby"
req_str = request.SerializeToString()
print(req_str)
import json
req_json = {
    "name":"bobby"
}
print(len(json.dumps(req_json)))
print(len(req_str))