Did you even bother looking? It states on the linked page that the code is under the Apache 2 License and the download page states it too: Community Edition FR

Did you even bother looking? It states on the linked page that the code is under the Apache 2 License and the download page states it too: Community Edition FREE Lightweight IDE for Python development only Free, open-source, Apache 2 license Intelligent Editor, Debugger, Refactorings, Inspections, VCS integration Project Navigation, Testing support, Customizable UI, Vim key bindings