问题
I have a little problem with changing python3 to default in newly installed operating system linux Mint 19.3. It was pretty easy on Ubuntu 16.04 but now I need small help here.
So, I run
python --version
and got this
Python 2.7.15+
Than I run
python3 --version
and this was the result
Python 3.6.8
After entering this command
sudo update-alternatives --config python
I received obvious info
update-alternatives: error: no alternatives for python
Both version of python are located in /usr/bin folder. The issue occurs when I'm trying to change python3 to as a default by typing the command
sudo update-alternatives --install /usr/bin/python python /usr/bin/python3.6
The terminal outputs the following
update-alternatives: --install needs <link> <name> <path> <priority>
Any help here would be welcome.
回答1:
In your case, priority is missing, just append 1 at the end of the command like this :
sudo update-alternatives --install /usr/bin/python python /usr/bin/python3.6 1
来源：https://stackoverflow.com/questions/59916531/how-to-change-python3-to-default-in-linux-mint