install python3.8 on centos8

1. Download python3.8 source package

wget https://www.python.org/ftp/python/3.8.3/Python-3.8.3rc1.tgz

2. Unzip the source package

tar -zxvf Python-3.8.3rc1.tgz

3. Enter the source package file

cd Python-3.8.3rc1

4. Specify the installation directory as /opt/python3.8 (this step will take a long time)

./configure --prefix=/opt/python3.8 

5. According to the prompt, execute the following code (this step will take a long time)

./configure --enable-optimizations

6. Compile and install (this step will take a long time)

make && make install

7. Change the path variable of linux and add python3
   /etc/profile # System environment variable configuration file
   Open the system environment variable configuration file with vim editor: vim /etc/profile

vim /etc/profile

Configure environment variables

PATH=/opt/python3.8/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin

8. Reload configuration file /etc/profile

source /etc/profile

9. Check whether python and pip are installed successfully