[Python-mode] Don't bind C-c C-h

[skip at pobox.com]

    >> The C-h binding is very important for discoverability, and I think it
    >> is a very, very bad idea to bind it to anything.

    Barry> If we /do/ change it, may I suggest C-c C-e?  'e' being a
    Barry> mnemonic for 'explain', and C-c C-e is currently unused in
    Barry> python-mode.

Is there any other programming mode with something akin to py-help-at-point?
If so, what binding(s) do they use?

S