将库安装到我的“基础"中吗?系统 Python 可以在 virtualenv 中使用吗? [英] Will libraries installed to my "base" system Python be available in a virtualenv?

问题描述

我是 Python 新手，所以请保持温和.

I'm new to python, so please be gentle.

在学习 Python 和编写我的前几个脚本时，我很快就忽略了关于 virtualenv 的任何教程部分，认为它不会在我的初级阶段给我带来任何好处.

In learning python and writing my first few scripts, I quickly glossed over any tutorial sections on virtualenv, figuring it wouldn't provide me any benefit in my nascent stage.

我继续破解，安装软件包，同时使用 pip3 install package

I proceeded to hack away, installing packages as I went with pip3 install package

现在我已经构建了一些可能对我的组织有用的东西，我想分享它.在这种情况下，我想将其作为 Windows 可执行文件分发.

Now I've built something that is potentially useful to my organization, and I'd like to share it. In this case, I want to distribute it as a windows executable.

在构建这个发行版之前，我认为现在是时候从单个脚本到适当的 Python 项目进行下一次飞跃了.看起来 virtualenv 应该是其中的一部分.

Before building this distribution, I figure it's now time to take the next leap from individual scripts to proper python projects. It seems like virtualenv should be part of that.

鉴于我已经在我的基本"python 环境中安装了许多软件包:为了在干净"的虚拟环境中进行开发，我是否需要以某种方式恢复"我的基本 python 环境(即卸载所有非标准包)，或者 virtualenv 是否会将虚拟环境中的项目与安装到我的基本"环境的非标准包屏蔽?

Given that I've installed a number of packages to my "base" python environment: in order to do development in a "clean" virtual environment, do I need to somehow "revert" my base python environment (i.e. uninstall all non-standard packages), or will virtualenv shield a project within a virtual environment from non-standard packages installed to my "base" environment?

推荐答案

如果您正在使用 venv 模块，则有 --system-site-packages 标志将授予创建的虚拟环境访问系统范围的站点包目录的权限:

If you are using the venv module there is --system-site-packages flag that will grant the created virtual environment access to the system-wide site-packages directory:

  --system-site-packages
                         Give the virtual environment access to the system
                         site-packages dir.

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