Centos7 安装Python3.7

如果电脑自带的python2.7 先卸载

1.强制删除已安装python及其关联

rpm -qa|grep python|xargs rpm -ev --allmatches --nodeps

2.删除残余文件

whereis python|xargs rm -frv

再来开始安装pyton3

1.安装编译 以及 相关的工具

yum -y groupinstall "Development tools"
 
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
 
yum install libffi-devel -y

2.下载安装包解压

wget https://www.python.org/ftp/python/3.7.0/Python-3.7.0.tar.xz
.tar.xz

3.编译安装

mkdir /usr/local/python3 #创建编译安装目录
cd Python-
./configure --prefix=/usr/local/python3
make && make install

4.创建软连接

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

5.验证是否成功

python3 -V
pip3 -V

卸载python3

rpm -qa|grep python3|xargs rpm -ev --allmatches --nodeps

删除残留文件

 whereis python3 |xargs rm -frv

查看现有安装的python

whereis   python       查看现有安装的python