[protobuf] How does HasField works in Python bindings for protobuf

[Robert Kuska]

Consider following code:

message Fly{
uint32 dtime = 1;
}

d.ListFields()[0][0].name

'dtime'

d.ListFields()[0][0].full_name

'Fly.dtime

d.HasField('dtime')

Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File
"/home/rkuska/.local/lib/python2.7/site-packages/google/protobuf/internal/python_message.py",
line 825, in HasField
raise ValueError(error_msg % field_name)
ValueError: Protocol message has no non-repeated submessage field
"dtime_utc"

d.HasField('Fly.dtime')

Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File
"/home/rkuska/.local/lib/python2.7/site-packages/google/protobuf/internal/python_message.py",
line 825, in HasField
raise ValueError(error_msg % field_name)
ValueError: Protocol message has no non-repeated submessage field
"Flight.dtime_utc"

What does HasField expect as a parameter?

['Jie Luo' via Protocol Buffers]

If you are using proto3, HasField is not supported for primitive types.

Post by Robert Kuska
message Fly{
uint32 dtime = 1;
}

d.ListFields()[0][0].name

'dtime'

d.ListFields()[0][0].full_name

'Fly.dtime

d.HasField('dtime')

File "<stdin>", line 1, in <module>
File
"/home/rkuska/.local/lib/python2.7/site-packages/google/protobuf/internal/python_message.py",
line 825, in HasField
raise ValueError(error_msg % field_name)
ValueError: Protocol message has no non-repeated submessage field
"dtime_utc"

d.HasField('Fly.dtime')

File "<stdin>", line 1, in <module>
File
"/home/rkuska/.local/lib/python2.7/site-packages/google/protobuf/internal/python_message.py",
line 825, in HasField
raise ValueError(error_msg % field_name)
ValueError: Protocol message has no non-repeated submessage field
"Flight.dtime_utc"
What does HasField expect as a parameter?
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