python 中的协议缓冲区：未生成类

My proto文件如下：

syntax = "proto3";
option csharp_namespace = "Proto";

message FileListRequest {
    repeated File Files = 1;
}

message File {
    string Path = 1;
}

message ImageFile {
    File File = 1;
    Size Size = 2;
    bytes Content = 3;
}

message Size {
    int32 Width = 1;
    int32 Height = 2;
}

message SendNextFile {
    
}

我用以下命令编译它：

protoc --proto_path=. -I . --python_out=..\..\python\Modules\PreloadingIteratorWrapper\ .\filelist.proto

这将创建以下文件：

# -*- coding: utf-8 -*-
# Generated by the protocol buffer compiler.  DO NOT EDIT!
# source: filelist.proto
"""Generated protocol buffer code."""
from google.protobuf.internal import builder as _builder
from google.protobuf import descriptor as _descriptor
from google.protobuf import descriptor_pool as _descriptor_pool
from google.protobuf import symbol_database as _symbol_database
# @@protoc_insertion_point(imports)

_sym_db = _symbol_database.Default()




DESCRIPTOR = _descriptor_pool.Default().AddSerializedFile(b'\n\x0e\x66ilelist.proto\"\'\n\x0f\x46ileListRequest\x12\x14\n\x05\x46iles\x18\x01 \x03(\x0b\x32\x05.File\"\x14\n\x04\x46ile\x12\x0c\n\x04Path\x18\x01 \x01(\t\"F\n\tImageFile\x12\x13\n\x04\x46ile\x18\x01 \x01(\x0b\x32\x05.File\x12\x13\n\x04Size\x18\x02 \x01(\x0b\x32\x05.Size\x12\x0f\n\x07\x43ontent\x18\x03 \x01(\x0c\"%\n\x04Size\x12\r\n\x05Width\x18\x01 \x01(\x05\x12\x0e\n\x06Height\x18\x02 \x01(\x05\"\x0e\n\x0cSendNextFileB\x08\xaa\x02\x05Protob\x06proto3')

_builder.BuildMessageAndEnumDescriptors(DESCRIPTOR, globals())
_builder.BuildTopDescriptorsAndMessages(DESCRIPTOR, 'filelist_pb2', globals())
if _descriptor._USE_C_DESCRIPTORS == False:

  DESCRIPTOR._options = None
  DESCRIPTOR._serialized_options = b'\252\002\005Proto'
  _FILELISTREQUEST._serialized_start=18
  _FILELISTREQUEST._serialized_end=57
  _FILE._serialized_start=59
  _FILE._serialized_end=79
  _IMAGEFILE._serialized_start=81
  _IMAGEFILE._serialized_end=151
  _SIZE._serialized_start=153
  _SIZE._serialized_end=190
  _SENDNEXTFILE._serialized_start=192
  _SENDNEXTFILE._serialized_end=206
# @@protoc_insertion_point(module_scope)

根据文档 https://developers.google.com/protocol-buffers/docs/pythontutorial该文件应该包含每种消息类型的类，但事实并非如此。为什么？

我有同样的问题。尝试使用 grpc-tools （我在另一个建议使用该工具的线程中找到了答案）我终于找到了解决方案。

只需将这个参数添加到 protoc 命令即可：--pyi_out like:

protoc --proto_path=. -I . --python_out=..\..\python\Modules\PreloadingIteratorWrapper\ --pyi_out=..\..\python\Modules\PreloadingIteratorWrapper\ .\filelist.proto

它将为您生成 _bp2.py 以及相应的 _bp2.pyi （存根文件）。之后，您的 IDE 将看到类名称，智能感知将起作用等。