ubuntu18.04 apt 安装python3.8

1. Run the following commands as root or user with sudo access to update the packages list and install the prerequisites:

   sudo apt updatesudo apt install software-properties-commonCopyCopy

2. Add the deadsnakes PPA to your system’s sources list:

   sudo add-apt-repository ppa:deadsnakes/ppaCopy

   When prompted press Enter to continue:

   Press [ENTER] to continue or Ctrl-c to cancel adding it.Copy

3. Once the repository is enabled, install Python 3.8 with:

   sudo apt install python3.8Copy

4. Verify that the installation was successful by typing:

   python3.8 --versionCopy

   Python 3.8.0Copy

   At this point, Python 3.8 is installed on your Ubuntu system, and you can start using it

https://linuxize.com/post/how-to-install-python-3-8-on-ubuntu-18-04/