'How to set a protobuf Timestamp field in python?

I am exploring the use of protocol buffers and would like to use the new Timestamp data type which is in protobuf3. Here is my .proto file:

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;
}

After generating python classes from this .proto file I'm attempting to create some objects using the generated classes. Here's the code:

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()

which fails with error:

AttributeError: Assignment not allowed to composite field "tstamp" in protocol message object.

Can anyone explain to me why this isn't working as I am nonplussed.

python protocol-buffers

Solution 1:^[1]

See Timestamp.

I think you want:

basket1.tstamp.GetCurrentTime()

Solution 2:^[2]

You could also parse it:

Timestamp().FromJsonString("2022-03-26T22:23:34Z")

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution	Source
Solution 1	DazWilkin
Solution 2	Jeremy Caney

'How to set a protobuf Timestamp field in python?

Solution 1:[1]

Solution 2:[2]

Sources

Related Questions

Solution 1:^[1]

Solution 2:^[2]