pip

installing packages

pip install <package-name>==<version>, version is optional

To install a package from git repository:

pip install -e git+REPO

pip currently supports cloning over git, git+https and git+ssh, Here are the supported forms:

[-e] git+git://git.myproject.org/MyProject#egg=MyProject
[-e] git+https://git.myproject.org/MyProject#egg=MyProject
[-e] git+ssh://git.myproject.org/MyProject#egg=MyProject  # for private repo, you can only use this
[-e] git+git@git.myproject.org:MyProject#egg=MyProject

Passing branch names, a commit hash or a tag name is possible like so:
[-e] git://git.myproject.org/MyProject.git@master#egg=MyProject
[-e] git://git.myproject.org/MyProject.git@v1.0#egg=MyProject
[-e] git://git.myproject.org/MyProject.git@da39a3ee5e6b4b0d3255bfef95601890afd80709#egg=MyProject

if you add the -e(editable) option, then you can save the version info in freeze, which is exactly what you need.

upgrade a package:

pip install package-name --upgrade
pip install xxx -U

忽略缓存

pip install --on-cache-dir xxx

requirements file

save current dependencies to a requirement file:

pip freeze > requirements.txt

install from a requirement file

pip install -r requirements.txt

http://crazygit.wiseturtles.com/2018/01/08/pipenv-tour/

卸载的时候删除所有依赖

可以使用 pip-autoremove 包

pip install pip-autoremove
pip-autoremove requrests -y  # requests 有严重的内存泄露，而且代码非常不优雅，强烈建议不要使用。

让 pip 使用国内的源

• 阿里云 https://mirrors.aliyun.com/pypi/simple/
• 中国科技大学 https://pypi.mirrors.ustc.edu.cn/simple/
• 豆瓣 http://pypi.douban.com/simple/
• 清华大学 https://pypi.tuna.tsinghua.edu.cn/simple/
• 中国科学技术大学 http://pypi.mirrors.ustc.edu.cn/simple/

pip install flask -i https://pypi.tuna.tsinghua.edu.cn/simple/

修改 ~/.pip/pip.conf (没有就创建一个)， 内容如下：

[global]
https://pypi.tuna.tsinghua.edu.cn/simple/

poetry

pipenv

pipenv 太垃圾了，吹得很牛逼，结果基本不能用。不知道为啥不使用官方的 venv，而要使用 virtualenv。强烈不建议使用。