pip install requirements.txt报错问题

python 项目在pip install -r requirements.txt 的时候经常报：externally-managed-environment

× This environment is externally managed ╰─> To install Python packages system-wide, try apt install python3-xyz, where xyz is the package you are trying to install. 的错误 解决之道：为项目创建新的虚拟环境：

python3 -m venv venv

# 激活虚拟环境（Linux/Mac）
source venv/bin/activate

对于windows

# Windows系统激活（PowerShell）
venv\Scripts\Activate.ps1