Linux下安装python3.7.9

• 操作系统与原有python

  [pythondemo@localhost ~]$ cat /etc/centos-release
  CentOS Linux release 7.4.1708 (Core)
  
  
  [pythondemo@localhost ~]$ python
  Python 2.7.5 (default, Aug  4 2017, 00:39:18)
  [GCC 4.8.5 20150623 (Red Hat 4.8.5-16)] on linux2
  Type "help", "copyright", "credits" or "license" for more information.
  >>>
  

• 下载python 3.7.9

  curl https://www.python.org/ftp/python/3.7.9/Python-3.7.9.tgz
  

• 安装依赖

  yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gcc make
  

• 解压压缩包

  tar -zxvf Python-3.7.9.tgz
  

• 把解压后的python移到/usr/local

  mv Python-3.7.9 /usr/local
  # 进入解压后的目录
  cd /usr/local/bin/python3.7.9
  

• 编译python3.7.9

  # 配置
  ./configure
  # 编译
  make
  # 安装
  make install
  

• 新建软链接

  # 查看原有软链接
  ll -d /usr/bin/python
  lrwxrwxrwx. 1 root root 7 Aug  4  2020 /usr/bin/python -> python2
  # 删除原有的软链接
  rm -rf /usr/bin/python
  # 新建软链接
  ln -s /usr/local/bin/python3.7.9 /usr/bin/python
  

• 安装完成

  [pythondemo@localhost ~]$ python3
  Python 3.7.9 (default, Jun 11 2023, 21:54:07)
  [GCC 4.8.5 20150623 (Red Hat 4.8.5-44)] on linux
  Type "help", "copyright", "credits" or "license" for more information.
  >>> quit()