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CentOS7安装python-pip
python中的一个十分好用的包管理工具python-pip是我们使用python必不可少的一件工具。但是在CentOS7安装时候却遇到了一些小问题：
[root@luna magic]# yum install python-pip 已加载插件：fastestmirror, langpacks Loading mirror speeds from cached hostfile * base: mirrors.btte.net * extras: mirrors.btte.net * updates: mirrors.btte.net 没有可用软件包 python-pip。 错误：无须任何处理
查阅资料以后，原来是因为CentOS官方的源有些时候滞后导致的。所以我们可以用fedora社区打造的EPEL(http://fedoraproject.org/wiki/EPEL)来进行安装：
[root@luna magic]# sudo yum -y install epel-release 已加载插件：fastestmirror, langpacks Loading mirror speeds from cached hostfile * base: mirrors.btte.net * extras: mirrors.btte.net * updates: mirrors.btte.net 正在解决依赖关系 --> 正在检查事务 ---> 软件包 epel-release.noarch.0.7-9 将被 安装 --> 解决依赖关系完成 依赖关系解决 ============================================================================================================= Package 架构 版本 源 大小 ============================================================================================================= 正在安装: epel-release noarch 7-9 extras 14 k 事务概要 ============================================================================================================= 安装 1 软件包 总下载量：14 k 安装大小：24 k Downloading packages: 警告：/var/cache/yum/x86_64/7/extras/packages/epel-release-7-9.noarch.rpm: 头V3 RSA/SHA256 Signature, 密钥 ID f4a80eb5: NOKEY epel-release-7-9.noarch.rpm 的公钥尚未安装 epel-release-7-9.noarch.rpm | 14 kB 00:00:00 从 file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 检索密钥 导入 GPG key 0xF4A80EB5: 用户ID : "CentOS-7 Key (CentOS 7 Official Signing Key) <security@centos.org>" 指纹 : 6341 ab27 53d7 8a78 a7c2 7bb1 24c6 a8a7 f4a8 0eb5 软件包 : centos-release-7-3.1611.el7.centos.x86_64 (@anaconda) 来自 : /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 Running transaction check Running transaction test Transaction test succeeded Running transaction 正在安装 : epel-release-7-9.noarch 1/1 验证中 : epel-release-7-9.noarch 1/1 已安装: epel-release.noarch 0:7-9 完毕！
然后再来安装python-pip:
[root@luna magic]# sudo yum -y install python-pip 已加载插件：fastestmirror, langpacks epel/x86_64/metalink | 5.6 kB 00:00:00 epel | 4.3 kB 00:00:00 (1/3): epel/x86_64/group_gz | 170 kB 00:00:00 (2/3): epel/x86_64/updateinfo | 749 kB 00:00:04 (3/3): epel/x86_64/primary_db | 4.6 MB 00:02:25 Loading mirror speeds from cached hostfile * base: mirrors.btte.net * epel: mirrors.neusoft.edu.cn * extras: mirrors.btte.net * updates: mirrors.btte.net 正在解决依赖关系 --> 正在检查事务 ---> 软件包 python2-pip.noarch.0.8.1.2-5.el7 将被 安装 --> 解决依赖关系完成 依赖关系解决 ============================================================================================================= Package 架构 版本 源 大小 ============================================================================================================= 正在安装: python2-pip noarch 8.1.2-5.el7 epel 1.7 M 事务概要 ============================================================================================================= 安装 1 软件包 总下载量：1.7 M 安装大小：7.2 M Downloading packages: 警告：/var/cache/yum/x86_64/7/epel/packages/python2-pip-8.1.2-5.el7.noarch.rpm: 头V3 RSA/SHA256 Signature, 密钥 ID 352c64e5: NOKEY python2-pip-8.1.2-5.el7.noarch.rpm 的公钥尚未安装 python2-pip-8.1.2-5.el7.noarch.rpm | 1.7 MB 00:00:07 从 file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7 检索密钥 导入 GPG key 0x352C64E5: 用户ID : "Fedora EPEL (7) <epel@fedoraproject.org>" 指纹 : 91e9 7d7c 4a5e 96f1 7f3e 888f 6a2f aea2 352c 64e5 软件包 : epel-release-7-9.noarch (@extras) 来自 : /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7 Running transaction check Running transaction test Transaction test succeeded Running transaction 正在安装 : python2-pip-8.1.2-5.el7.noarch 1/1 验证中 : python2-pip-8.1.2-5.el7.noarch 1/1 已安装: python2-pip.noarch 0:8.1.2-5.el7 完毕！
然后来运行一下试试看：
[root@luna magic]# 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.
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.
--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.
--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.
PS：未经作者授权，谢绝转载！
CentOS7安装python-pip
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