JetBrains is a company producing proprietary commercial IDEs as well as two open source ones: pycharm-community and intellij-community (download).
Since there is no official debian package for any of the jetbrains products in the official repositories. There are two methods to install jetbrains software on Debian either by using Jonas Groegor's unofficial PPA or by using Jetbrains official snap packages.
Jonas Groegor maintains an unofficial for Ubuntu and Debian: https://github.com/JonasGroeger/jetbrains-ppa. Installing from his repository works in Debian Buster.
Execute the following commands to install pycharm-community on debian buster using his ppa:
curl -s https://s3.eu-central-1.amazonaws.com/jetbrains-ppa/0xA6E8698A.pub.asc | sudo apt-key add - echo "deb http://jetbrains-ppa.s3-website.eu-central-1.amazonaws.com bionic main" | sudo tee /etc/apt/sources.list.d/jetbrains-ppa.list > /dev/null sudo apt update sudo apt install pycharm-community
Jetbrains maintains official snap packages for their products.
Here are instructions on how to install pycharm-community using the official snap package: Install snapd
sudo apt install snapd
Install pycharm-community as a snap package
sudo snap install pycharm-community --classic
snap run pycharm-community