Hello,
Following up on the documentation on *Singular Message Fields* (link
<https://protobuf.dev/reference/python/python-generated/#embedded_message>)
and its examples, I’m unclear on passing messages to the initializer.
Building on the existing example:
message Foo { optional Bar bar = 1; } message Bar { optional int32 i = 1; }
I am not supposed to use
foo = Foo() foo.bar = Bar() # WRONG!
but what about
foo = Foo(bar=Bar(i=5))
In this case, will the generated initializer use e.g. *CopyFrom()* (docs
<https://googleapis.dev/python/protobuf/latest/google/protobuf/message.html#google.protobuf.message.Message.CopyFrom>)
correctly? Or is the recommendation to use:
foo = Foo() bar = Bar*()*foo.bar.CopyFrom*(*bar*)*
The suggestion to write directly to fields of *Bar* can become tedious,
particulalry if *Bar* is more complex and I’d like to compose messages form
other messages.
Much thanks!
Jens
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