Linux 源码安装Python

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下载源码tar包
下载地址：https://www.python.org/downloads/
我这里下载的 Python-2.7.11.tgz

1	# tar -zxvf Python-2.7.11.tgz

进入解压缩后的文件夹

1	# cd Python-2.7.11

　　在编译前先在/usr/local建一个文件夹python2（作为python的安装路径，以免覆盖老的版本）

# mkdir /usr/local/python2
　　开始编译安装

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# ./configure --prefix=/usr/local/python2 # make # make install

移动之前的版本

1	# mv /usr/bin/python /usr/bin/python_old

再建立新版本python的链接

1	ln -s /usr/local/python2/bin/python /usr/bin/python

这个时候输入

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# python Python 2.7.11 (default, Feb 19 2016, 18:01:00) [GCC 4.8.5 20150623 (Red Hat 4.8.5-4)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>>

完成

由于安装了新版的Python对yum 使用受到影响，情况如下

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# yum grouplist There was a problem importing one of the Python modules required to run yum. The error leading to this problem was:    No module named yum Please install a package which provides this module, or verify that the module is installed correctly. It's possible that the above module doesn't match the current version of Python, which is: 2.7.11 (default, Feb 19 2016, 18:01:00) [GCC 4.8.5 20150623 (Red Hat 4.8.5-4)] If you cannot solve this problem yourself, please go to the yum faq at:   http://yum.baseurl.org/wiki/Faq

意思是python版本不匹配，我们修改yum为老版本python就是了


查看原python位置

1 2	# whereis python python: /usr/bin/python2.7 /usr/bin/python /usr/lib/python2.7 /usr/lib64/python2.7 /usr/include/python2.7 /usr/share/man/man1/python.1.gz

1	# vim /usr/bin/yum

修改第一行 #!/usr/bin/python 为 #!/usr/bin/python2.7

ok.完成