how to install python 3 on ubuntu 20.04

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

sudo apt update
sudo apt install software-properties-common

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

sudo add-apt-repository ppa:deadsnakes/ppa
When prompted press Enter to continue:

- Press [ENTER] to continue or Ctrl-c to cancel adding it.
- Once the repository is enabled, install Python 3.8 with:

sudo apt install python3.8

- Verify that the installation was successful by typing:

python3.8 --version

sudo add-apt-repository ppa:deadsnakes/ppa
sudo apt-get update
sudo apt-get install python3.7

sudo apt install build-essential libssl-dev libffi-dev python3-dev

sudo apt update
sudo apt -y upgrade

pip3 install package_name

sudo apt install -y python3-pip

python

OutputPython 3.8.2

python3 -m venv my_env

sudo apt install -y python3-venv