简介
pip is the package installer for Python.
You can use pip to install packages from the Python Package Index and other indexes.
官网说明：pip是Python包管理工具，主要用于包的查找、下载、安装、卸载的功能。 当前版本：V19.3.1
安装
本人主要使用MacOX、Centos7系统，关于安装，这里介绍2种方式。
curl
# 下载安装脚本
curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
# 运行安装脚本
sudo python get-pip.py
easy_install
easy_install pip
参数说明
[root@bash ~]# pip --help
Usage:
pip <command> [options]
Commands:
install Install packages.
download Download packages.
uninstall Uninstall packages.
freeze Output installed packages in requirements format.
list List installed packages.
show Show information about installed packages.
check Verify installed packages have compatible dependencies.
config Manage local and global configuration.
search Search PyPI for packages.
wheel Build wheels from your requirements.
hash Compute hashes of package archives.
completion A helper command used for command completion.
debug Show information useful for debugging.
help Show help for commands.
General Options:
-h, --help Show help.
--isolated Run pip in an isolated mode, ignoring environment variables and user configuration.
-v, --verbose Give more output. Option is additive, and can be used up to 3 times.
-V, --version Show version and exit.
-q, --quiet Give less output. Option is additive, and can be used up to 3 times (corresponding to WARNING, ERROR, and CRITICAL logging levels).
--log <path> Path to a verbose appending log.
--proxy <proxy> Specify a proxy in the form [user:passwd@]proxy.server:port.
--retries <retries> Maximum number of retries each connection should attempt (default 3 times).
--timeout <sec> Set the socket timeout (default 90.0 seconds).
--exists-action <action> Default action when a path already exists: (s)witch, (i)gnore, (w)ipe, (b)ackup, (a)bo