python-shell-send-defun

;; python-shell-send-defun (bugfix)
(with-eval-after-load 'python
  (require 'rx)
  (defun python-shell-send-defun (&optional arg msg)
    "Send the current defun to inferior Python process.
When argument ARG is non-nil do not include decorators.  When
optional argument MSG is non-nil, forces display of a
user-friendly message if there's no process running; defaults to
t when called interactively."
    (interactive (list current-prefix-arg t))
    (save-excursion
      (python-shell-send-region
       (progn
         (end-of-line 1)
         (while (and (or (python-nav-beginning-of-defun)
                         (beginning-of-line 1))
                     (> (current-indentation) 0)))
         (when (not arg)
           (while (and (forward-line -1)
                       (looking-at (python-rx decorator))))
           (forward-line 1))
         (point-marker))
       (progn
         (forward-line) ;; fixes a bug when a function has a decorator
         (or (python-nav-end-of-defun)
             (end-of-line 1))
         (point-marker))
       nil  ;; noop
       msg))))