1. 安装依赖环境

# 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



2.在python官网找到自己需要的python,tar包下载至本地

# wget https://www.python.org/ftp/python/3.A.B/Python-3.A.B.tgz



3. 创建Python3的目录

# mkdir /usr/local/python3



4. 解压下载文件并切换目录

# tar -zxvf Python-3.A.B.tgz

# cd Python-3.A.B



5. 执行

# ./configure --prefix=/usr/local/python3

# make && make install



6. 创建Python3的软链接

# ln -s /usr/local/python3/bin/python3 /usr/bin/python3



7. 创建Pip3的软链接

# ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3



8. 测试命令 python3 和 pip3

# python3

# pip3


安装保留了原python命令调用python2

安装完成