Zainstaluj Python3.7 Ubuntu 20.04
sudo add-apt-repository ppa:deadsnakes/ppa
sudo apt-get update
sudo apt-get install python3.7
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sudo add-apt-repository ppa:deadsnakes/ppa
sudo apt-get update
sudo apt-get install python3.7
sudo apt install python3.9$ sudo apt update
$ sudo apt -y upgrade