我正在探索协议缓冲区的使用,并希望使用protobuf3中的新时间戳数据类型。这是我的.proto文件:
syntax = "proto3";
package shoppingbasket;
import "google/protobuf/timestamp.proto";
message TransactionItem {
optional string product = 1;
optional int32 quantity = 2;
optional double price = 3;
optional double discount = 4;
}
message Basket {
optional string basket = 1;
optional google.protobuf.Timestamp tstamp = 2;
optional string customer = 3;
optional string store = 4;
optional string channel = 5;
repeated TransactionItem transactionItems = 6;
}
message Baskets {
repeated Basket baskets = 1;
}
从这个.proto文件生成python类之后,我尝试使用生成的类创建一些对象。代码如下:
import shoppingbasket_pb2
from google.protobuf.timestamp_pb2 import Timestamp
baskets = shoppingbasket_pb2.Baskets()
basket1 = baskets.baskets.add()
basket1.basket = "001"
basket1.tstamp = Timestamp().GetCurrentTime()
出现错误时失败:
AttributeError: Assignment not allowed to composite field "tstamp" in protocol message object.
有谁能解释一下为什么这不起作用,因为我很困惑
见Timestamp
我想你想要:
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