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错误打印
Traceback (most recent call last):File "/home/mi/local/sdk-for-device/proto_buf/0.3.9.6/generator/nanopb_generator.py", line 37, in <module>from .proto import nanopb_pb2, plugin_pb2
ImportError: attempted relative import with no known parent packageDuring handling of the above exception, another exception occurred:Traceback (most recent call last):File "/home/mi/local/sdk-for-device/proto_buf/0.3.9.6/generator/nanopb_generator.py", line 57, in <module>import proto.nanopb_pb2 as nanopb_pb2File "/home/mi/local/sdk-for-device/proto_buf/0.3.9.6/generator/proto/nanopb_pb2.py", line 34, in <module>_descriptor.EnumValueDescriptor(File "/home/mi/.local/lib/python3.8/site-packages/google/protobuf/descriptor.py", line 789, in __new___message.Message._CheckCalledFromGeneratedFile()
TypeError: Descriptors cannot be created directly.
If this call came from a _pb2.py file, your generated code is out of date and must be regenerated with protoc >= 3.19.0.
If you cannot immediately regenerate your protos, some other possible workarounds are:1. Downgrade the protobuf package to 3.20.x or lower.2. Set PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python (but this will use pure-Python parsing and will be much slower).More information: https://developers.google.com/protocol-buffers/docs/news/2022-05-06#python-updates
--nanopb_out: protoc-gen-nanopb: Plugin failed with status code 1.
make: *** [Makefile.proto:21: protomk] Error 1这个问题怎么解决
这个错误是由于你的 protobuf 版本过高，而你的生成的代码需要一个较低版本的 protobuf。这个问题有两种可能的解决方案：
- 降级你的 protobuf 包：你可以尝试将你的 protobuf 包降级到 3.20.x 或更低的版本。你可以使用以下命令来降级 protobuf：
pip install protobuf==3.20.0
- 设置环境变量：你可以尝试设置环境变量
PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION为python。这将使用纯 Python 解析，但可能会比较慢。你可以使用以下命令来设置环境变量：
export PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python
如果以上方法都不能解决你的问题，你可能需要使用 protoc 版本 >= 3.19.0 来重新生成你的代码。
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