python使用protobuf

来源：互联网发布：淘宝店促销活动方案编辑：程序博客网时间：2024/05/16 14:04

下面都是在windows上完成的：

1、安装protobuf：

1）使用pip安装：

pip install protobuf>=2.5.0

2）源码安装：

下载，然后python setup.py install

2、使用：

pb文件：

message RowProto {  required uint32 null_map = 1;  repeated string column = 2;  }    message TableProto {  repeated string column = 1;  repeated string row = 2;  }

编译：

protoc --python_out=/data/home/ ./DataService.proto

得到DataService_pb2.py

解析：

import sys  import DataService_pb2    #create proto  row = DataService_pb2.RowProto()  row.null_map = 1  row.column.append("wang")  row.column.append("female")  row_str=row.SerializeToString()  print row_str  table = DataService_pb2.TableProto()  table.column.append("name")  table.column.append("gender")  table.row.append(row_str)  table_str = table.SerializeToString()    #process proto  table_proto = DataService_pb2.TableProto()  table_proto.ParseFromString(table_str)  print "column:"  print table_proto.column    row_str = table_proto.row[0]  row_proto = DataService_pb2.RowProto()  row_proto.ParseFromString(row_str.encode('utf8'))  print "row1:"  print row_proto.column

读文件：

import sys  import DataService_pb2    f = open("table", 'rb',)    table_proto = DataService_pb2.TableProto()    table_proto.ParseFromString(f.read())    print table_proto.column    #print table_proto.row    for row in table_proto.row:      row_proto = DataService_pb2.RowProto()      row_proto.ParseFromString(row.encode('utf-8'))      print row_proto.column    f.close()

0 0