Python 如何将全局安装的包导入到 virtualenv 文件夹
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How to import a globally installed package to virtualenv folder
提问by Richard Knop
So I have a virtualenv folder called venv for my python project.
所以我的 python 项目有一个名为 venv 的 virtualenv 文件夹。
I can run:
我可以跑：
venv/bin/pip install -r requirements.txt
Which installs all requirements I need for the project except one, M2Crypto. The only way to install it is through apt-get:
它安装了我需要的项目的所有要求，除了一个，M2Crypto。安装它的唯一方法是通过 apt-get：
apt-get install python-m2crypto
How can I then add this package installed through apt to venv folder?
然后如何将通过 apt 安装的这个包添加到 venv 文件夹？
采纳答案by Richard Knop
What I did after all:
毕竟我做了什么：
cp -R /usr/lib/python2.7/dist-packages/M2Crypto /home/richard/hello-project/venv/lib/python2.7/site-packages/
cp -R /usr/lib/python2.7/dist-packages/OpenSSL /home/richard/hello-project/venv/lib/python2.7/site-packages/
回答by Amber
venv/bin/pip install -I M2Crypto
The -Iforces it to also be installed into the virtualenv, even if it's already globally installed.
该-I强制它也可以安装到virtualenv中，即使它已经在全球安装。
回答by Corey Goldberg
--system-site-packages
gives access to the global site-packages modules to the virtual environment.
允许访问虚拟环境的全局站点包模块。
you could do:
你可以这样做：
$ sudo apt-get install python-m2crypto
$ virtualenv env --system-site-packages
... and you would then have access to m2crypto(along with all other system-wide installed packages) inside your virtualenv.
...然后您将可以访问m2crypto（以及所有其他系统范围内安装的软件包）在您的 virtualenv 中。
回答by Will
toggleglobalsitepackageswill toggle access to the system-wide site-packages.
toggleglobalsitepackages将切换对系统范围的访问site-packages。
Note:You need to pip install virtualenvwrapperto get this command; the vanilla virtualenvdoesn't include it. With virtualenvwrapperyou also get the very useful mkvirtualenvand rmvirtualenvcommands, among others.
注意：你需要pip install virtualenvwrapper得到这个命令；香草virtualenv不包括它。随着virtualenvwrapper你也得到了非常有用mkvirtualenv和rmvirtualenv命令，等等。
回答by roshnet
Real simple solution.
真正简单的解决方案。
In the virtual environment directory, edit the file pyvenv.cfg. Set the parameter include-system-site-packages = true, and save the file.
The globally installed modules will appear the next time you activate (source venv/bin/activate) your environment.
在虚拟环境目录中，编辑文件pyvenv.cfg. 设置参数 include-system-site-packages = true，并保存文件。全局安装的模块将在您下次激活 ( source venv/bin/activate) 环境时出现。
It can be verified via pip list.
可以通过验证pip list。
Enjoy!
享受！
