Emacs extension specific keybinding

Question

I'm trying to write a keybinding to comment current line which goes something like this for python.

(fset 'comment 
      (lambda (&optional arg)
    "Keyboard macro."
    (interactive "p")
    (kmacro-exec-ring-item (quote ("^A^[f^[b#" 0 "%d")) arg)))

(global-set-key (kbd "C-x /") 'comment)

How can I use the same keybinding on multiple languages say python and cpp? Is there anyway to identify the filetype and execute the keybinding accordingly?

Answer 1

You can save the keybinding only to a specific keymap:

(eval-after-load "python-mode"
    '(define-key python-mode-map "\C-x/" 'comment))