ubuntu16.04升级python3.7.1教程

1. 准备

   sudo apt-get install --reinstall zlibc zlib1g zlib1g-dev 
   sudo apt-get install libffi-dev libssl-dev libreadline-dev -y
   

2. 安装

   使用python官方站点的以下命令下载Python。您也可以下载最新版本代替下面指定的版本

   #下载python3.7.1
   sudo wget https://www.python.org/ftp/python/3.7.1/Python-3.7.1.tgz
   #解压
   sudo tar xzf Python-3.7.1.tgz
   

3. 进入解压目录

   cd Python-3.7.1/

4. 4、建立安装的目录

   sudo mkdir -p /usr/local/python3

5. 编译安装

   #执行这步是后面最好加上 --enable-optimizations 会自动安装pip3及优化配置
   #./configure:配置安装环境
   #--prefix=/usr/local/python3:指向安装路径
   #--enable-optimizations:安装pip3及优化配置
   ./configure --prefix=/usr/local/python3 --enable-optimizations
   make
   sudo make install
   

6. 删除软连接

       >     #先执行查看版本，如果有则证明软链接已存在，需要先删去以前的再重新建立
       >     #这里表明我已有python3的软链接而没有pip3的软链接所以需要删除python3的软链接重新建立
       > jianjiacheng@J-computer:~/Python-3.7.1$ python3 -V 
       
       > Python 3.5.2
       > jianjiacheng@J-computer:~$ pip3 -V 
       > bash: /usr/lib/command-not-found:/usr/bin/python3: bad interpreter: No such file or directory
       > apt install python3-pip 
       > rm -rf /usr/bin/python3  
       > rm -rf /usr/bin/pip3
   

7. 建立新的指向python3.7的软链接

   添加python3的软链接

   ln -s /usr/local/python3/bin/python3.7 /usr/bin/python3
   

   添加 pip3 的软链接

   ln -s /usr/local/python3/bin/pip3.7 /usr/bin/pip3
   

8. 检测版本

   jianjiacheng@J-computer:~$ python3 -V
   Python 3.7.1

   jianjiacheng@J-computer:~$ pip3 -V
   pip 10.0.1 from /usr/local/python3/lib/python3.7/site-packages/pip (python 3.7)

9. 复制‘lsb_release.py’模块

   将其复制到设置python3.7的系统模块加载位置，也就是报错处subprocess.py所在的目录

   sudo cp  /usr/lib/python3/dist-packages/lsb_release.py /usr/local/python3/lib/python3.7/
   

10. 缺少‘lsb_release.py’模块：

[【问题解决】subprocess.CalledProcessError: Command ‘(‘lsb_release‘, ‘-a‘)‘ returned non-zero exit status 1][1]
[1]: https://blog.csdn.net/p1279030826/article/details/111573774