pip的简介
pip 是 Python 包管理工具，该工具提供了对Python 包的查找、下载、安装、卸载的功能。目前如果你在 python.org 下载最新版本的安装包，则是已经自带了该工具。 Python 3.4+ 以上版本都自带 pip 工具。pip这个工具，可以很方便的线上安装依赖库，并且，pip还有很多参数都可以帮我们去查询一些库信息
pip官网：https://pypi.org/project/pip/
pip的安装
1、Linux之Ubuntu系统安装pip3
sudo apt install python3-pip
pip的使用方法
相关文章
Python语言学习：python常用自带方法、头部代码、python调式、pip命令集合、常见概念详细攻略(解决问题为导向)
pip：成功解决pip下载时速度超慢的几种方法
1、Find pre-release and development versions, in addition to stable versions. By default, pip only finds stable versions.
$ pip install --pre SomePackage
2、超级权限下载或更新库
pip install --upgrade scipy --use
1、pip命令集合
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.
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 5 times).
--timeout <sec> Set the socket timeout (default 15 seconds).
--exists-action <action> Default action when a path already exists: (s)witch, (i)gnore, (w)ipe, (b)ackup,
(a)bort).
--trusted-host <hostname> Mark this host as trusted, even though it does not have valid or any HTTPS.
--cert <path> Path to alternate CA bundle.
--client-cert <path> Path to SSL client certificate, a single file containing the private key and the
certificate in PEM format.
--cache-dir <dir> Store the cache data in <dir>.
--no-cache-dir Disable the cache.
--disable-pip-version-check
Don't periodically check PyPI to determine whether a new version of pip is available for
download. Implied with --no-index.
--no-color Suppress colored output
