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如何在线查看此内容如何安装在虚拟环境中运行它以临时加载依赖项，而不必将它们永久添加到您的库中：安装virtualenv，它允许运行一个虚拟的Python环境进入虚拟环境并安装依赖需要Python依赖项b.对于自然语言工具包(nltk)，从语料库下载“停用词”退出虚拟环境命令： pip install virtualenv venv # Create a directory to hold your virtual environment source venv/bin/activate # Add the venv path to your path pip install -r requirements.txt # Install the requirements in the venv python -c "import