一、现象

运行命令：streamlit run promptsource/app.py 报错：

streamlit run promptsource/app.py Traceback (most recent call last): File "/usr/local/bin/streamlit", line 5, in <module> from streamlit.cli import main File "/usr/local/lib/python3.10/dist-packages/streamlit/__init__.py", line 49, in <module> from streamlit.proto.RootContainer_pb2 import RootContainer File "/usr/local/lib/python3.10/dist-packages/streamlit/proto/RootContainer_pb2.py", line 33, in <module> _descriptor.EnumValueDescriptor( File "/usr/local/lib/python3.10/dist-packages/google/protobuf/descriptor.py", line 920, 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 If this call came from a _pb2.py file, your generated code is out of date and must be regenerated with protoc 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).

二、以下是针对该问题的分步解决方案：

问题原因分析：
该错误源于Protobuf库版本与Streamlit依赖不兼容，通常发生在Protobuf 4.x版本中。以下是三种解决方法：

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方法1：降级Protobuf版本（推荐）

# 查看当前protobuf版本
pip show protobuf# 降级到兼容版本
pip install protobuf==3.20.3# 清理安装缓存
pip cache purge# 重新运行应用
streamlit run promptsource/app.py

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方法2：设置环境变量（临时方案）

# 运行前添加环境变量（速度会变慢）
PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python streamlit run promptsource/app.py

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方法3：创建纯净虚拟环境

# 创建并激活虚拟环境（Python 3.7）
conda create -n promptsource_env python=3.7
conda activate promptsource_env# 安装依赖
pip install promptsource
pip install protobuf==3.20.3# 运行应用
streamlit run promptsource/app.py

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附加说明：

1. 如果使用Jupyter环境，需重启kernel使版本更改生效

2. 完整依赖冲突检测命令：

pip check

1. 项目要求Python 3.7的解决方案：

# 使用pyenv管理多版本
pyenv install 3.7.13
pyenv local 3.7.13