Python code-folding in emacs?

I have many classes and defs ...

I want to have + and - keys before class and def to collapse the class or open it ( toggle it ).

How i can do this?

How do I fold a python code in Vim?

It maps alt+1 to fold the first python indent level (class definitions and functions), alt+2 to fold the second level (class methods), and alt+0 to unfold everything. It makes sure it only folds one level and doesn't fold any of the nested sub levels. You can still use za to toggle folding for the current block.

Hideshow works out of the box and folds python code. It is built-in my version of emacs (24.3.1)

I have never needed more than these commands:

M-x hs-minor-mode M-x hs-hide-all M-x hs-show-all

To toggle use C-c @ C-c which probably needs rebinding. You might also want to setup a hook in your .emacs file for hs-minor-mode to automatically be enabled when opening .py files.

I use it in combination the following to jump around.