PyScripter is an open-source Python Integrated Development Environment (IDE) created with the ambition to become competitive in functionality with commercial IDEs available for other languages. It is a feature-rich but also lightweight.
Installers and portable versions are available under "Files".
PyScripter is build with Delphi and sponsored by Embarcadero www.embarcadero.com. Check out the free ebook on Python GUI development : https://embt.co/PythonGUIBundle