Machine learning and statistics with python

I wanted to download a package some days ago which gave an error 'doesn't contain python>=3.7' ; which meant that I didn't have python of versions more than or equal to 3.7. So I went ahead and downloaded and faced certain problems. That's why I am writing this article. One line work: The only thing you need to do for this is write in bash: sudo apt update -y sudo apt install python3.7 Now this part is important. In many tutorials, you may have seen the following line: sudo update-alternatives --install /usr/bin/python python3 /usr/bin/python3.7 2 sudo update-alternatives --config python3 Now doing this last line, tutorials will tell you to selection 3.7 as the default option. That is where your system may go wrong. I did the same. And then the following three problem came up: (1) there is a red circle in notification bar with a white dash inside it. This says, some error happened while checking for updates. (2) You will not be able to access the software cen...