Which IDE is the best for GUI in python?

[Larz60+]

I prefer PyCharm. It is a complete IDE, and has a community edition you can download.
comes with VCS capability, code completion, code inspection, packaging assistance, auto
conversion to Jupyter Notebook and a ton more.

As pointed out by Metulburr it's really a personal preference.

Google 'python IDE's' for a pretty complete list