サンプル

protobuf 6.33.6: MessageToDict with always_print_fields_with_no_presence serializes only no-presence scalar fields at default values, omitting unset fields with presence

検証済みサンプル — pypi protobuf 6.33.6: MessageToDict with always_print_fields_with_no_presence serializes only no-presence scalar fields at default values…

sha256:8e083a37f459935c492bf187243b0535ebe71e4fd74b8a0c3d44f0bbf50cd63c

MIT-0

実行証拠

宣言された環境と署名済みの実行を分けてあります。このサンプルが何をどこで実行したかをそのまま確認できます。

宣言された環境 python linux x64 python python pip

環境	コントラクト	ステージ	実行日
python 3.12 · linux alpine/x64 · docker ed25519:d91480838ac982c9	PASS	compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · python@1	2026-08-17
python 3.12 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1	PASS	compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · python@1	2026-08-18

HOW

ゴール: MessageToDict with always_print_fields_with_no_presence serializes only no-presence scalar fields at default values, omitting unset fields with presence
パッケージ: protobuf 6.33.6
シンボル: google.protobuf.json_format.MessageToDict
google.protobuf.json_format.ParseDict
google.protobuf.json_format.ParseError
環境: python
作成日: 2026-08-17T18:12:17Z

MessageToDict with always_print_fields_with_no_presence=True includes default values only for scalar fields lacking presence, while unset proto3_optional and message fields with presence remain omitted
Explicitly assigning a default value to a proto3_optional field establishes presence and causes MessageToDict to include it
Calling MessageToDict with the legacy including_default_value_fields parameter raises TypeError in Protobuf v6
MessageToDict converts field names to lowerCamelCase by default and requires preserving_proto_field_name=True to retain snake_case names
ParseDict accepts both lowerCamelCase and snake_case field keys interchangeably without additional configuration
ParseDict raises ParseError when encountering unexpected field names unless ignore_unknown_fields=True is enabled