在Centos下安装python

1.下载python包

wget  https://www.Python.org/ftp/python/3.9.10/Python-3.9.10.tgz

2.下载python3编译的依赖包

yum install -y GCc patch libffi-devel python-devel  zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel

3.解压缩源码包

tar -zxvf /usr/local/software/tars/Python-3.9.10.tgz

4. 创建python的安装目录

mkdir -p  /usr/local/software/python

5.移动解压后的Python源码包到python目录

mv  /usr/local/software/tars/Python-3.9.10   /usr/local/software/python

6.进入解压后的目录并且执行

cd /usr/local/software/python/Python-3.9.10./configure --prefix=/usr/local/software/python/  # 指定安装目为/usr/local/software/python/

7.编译

make

8.编译安装

make install

9.添加linux环境变量 使用root账号

vi /etc/profile在末尾添加#pythonPATH=/usr/local/software/python/bin:$PATH保存后  执行source /etc/profile

10.修改python的链接指向

mv /usr/bin/python3 /usr/bin/python3.bakln -s /usr/local/software/python/bin/python3 /usr/bin/python3

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