对 python venv 和全局模块的不满 [英] frustrations over python venv and global modules
问题描述
几个月前我写了一个网页抓取编程，我让 python -m venv venv 做了一堆 pip 安装，检查并使用 pip list，一切看起来都很好.
I wrote a web scraping programming a couple of months ago, which I had python -m venv venv did a bunch of pip install, checked and doubled check with pip list, everything looks fine.
今天我想再次抓取所以我用pip list检查了我的source venv/bin/activate，一切看起来都很好，只是没有这个模块那...
And today I wanna scrape again so I did my source venv/bin/activate checked with pip list, everything looks fine, and just keep having no module of this and that...
但是当我停用它时，它会退回到我全局安装的模块，我的程序运行得非常好.我简直不敢相信，所以我做到了:rm -rf venv 和python -m venv source venv/bin/activate pip install -r requirements.txt一切都安装好了，用 pip list 检查，没有这个或那个模块.
But when I deactivated it, it falls back to my global installed modules, my program runs perfectly fine. I could't believe it so i did :
rm -rf venv and
python -m venv source venv/bin/activate pip install -r requirements.txt
everything installed, check with pip list, and no module of this or that.
任何人，请告诉我发生了什么?谢谢！
Anyone, please tell me what's happening? thank you!
推荐答案
确保使用的是什么 python 以及哪个 python 链接到当前 pip:
To ensure what python is being used and which python is linked to current pip:
which python查看python 可执行文件在哪里(或者which python3、which python3.7等...)- 运行
python显示python版本 pip -V显示它所链接的 python- 使用
python -m pip list确保pip链接到python python -m site显示site-package位于- 编写
python并多次点击TAB显示路径中可用的 python(取决于操作系统)
which pythonto see where is the python executable (alternativelywhich python3,which python3.7, etc...)- running
pythonshow the version of python pip -Vshows the python to which it is linked- use
python -m pip listto ensure the pip is linked to the python python -m siteshows were is thesite-packagelocated- writing
pythonand hittingTABmultiple times shows what pythons are available in the path (os dependent)
这更像是一种调试正在使用的 Python 的方法.
This is more of a way to debug which python is being used.
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