安装依赖环境
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| yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel
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| wget https://www.python.org/ftp/python/3.A.B/Python-3.A.B.tgz
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创建Python3的目录
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| mkdir /usr/local/python3
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解压下载文件并切换目录
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| tar -zxvf Python-3.A.B.tgz
cd Python-3.A.B
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执行
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| ./configure --prefix=/usr/local/python3
make && make install
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创建Python3的软链接
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| ln -s /usr/local/python3/bin/python3 /usr/bin/python3
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创建Pip3的软链接
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| ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3
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测试命令 python3 和 pip3
因为执行yum需要python2版本，所以我们还要修改yum的配置，执行：
vim /usr/bin/yum
把#! /usr/bin/python修改为#! /usr/bin/python2
同理 vim /usr/libexec/urlgrabber-ext-down
文件里面的#! /usr/bin/python 也要修改为#! /usr/bin/python2
安装保留了原python命令调用python2
安装完成
ps 安装报错
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| Q：
ModuleNotFoundError: No module named '_ctypes'
A：
yum -y install gcc gcc-c++
yum -y install zlib zlib-devel
yum -y install libffi-devel
Q：configure: error: no acceptable C compiler found in $PATH
A：yum install gcc
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