pip很像CentOS系統中的yum命令，用于安裝及維護Python包。

pip的安裝

windows

其實在windows下是默認安裝了pip工具的，只是沒有將其所在目錄加入Path，導致命令查找不到。


將python安裝目錄下的scripts目錄加入環境變量Path中即可。

Linux

執行下面命令即可完成安裝

# wget https://bootstrap.pypa.io/get-pip.py --no-check-certificate # python get-pip.py

pip使用

安裝包

pip install package_name

查看某個已安裝包

pip show --files package_name

檢查哪些包需要更新

pip list --outdated

升級包

pip install --upgrade package_name

卸載包

pip uninstall package_name

使用pip –help命令可以查看pip幫助手冊

# pip --helpUsage:pip <command> [options]Commands:install Install packages. 安裝包download Download packages. 下載包uninstall Uninstall packages. 卸載包freeze Output installed packages in requirements format. 按著一定格式輸出已安裝包列表list List installed packages. 列出已安裝包show Show information about installed packages. 顯示包詳細信息check Verify installed packages have compatible dependencies.檢查包的依賴關系是否完整config Manage local and global configuration.管理配置search Search PyPI for packages.搜索包wheel Build wheels from your requirements.hash Compute hashes of package archives.計算包的hash值 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

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