Is there a emacs plugin which lists all the methods in the module in a side pane. 
I am looking for a plugin which has keyboard shortcuts to show/hide all the methods in python module file currently opened.
For the first question, use M-xspeed-bar, like Alex suggested.
For the second, enable hs-minor-mode, M-xhs-minor-mode, and use C-cC-@C-S-h to hide all methods, and C-cC-@C-S-s to show.
Emacs plugin to list all methods in a python module