evil/elpy: Auto-fold when opening a file

[buhtz]

X-Post because no one answers

I am using Emacs 27.1 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.24, cairo version 1.16.0) of 2021-03-28, modified by Debian with elpy and evil-mode.

When I open a py-file I want everything folded in there by default.

It is still unclear for me how to search for an answer to this wish because I do not know which of the components (elpy, evil, emacs itself, ...) is responsible for that.