Open the bug and PR for commit under cursor in magit mode

python-bpo-pr-browser.el

(defun python-bugs-url ()
  (interactive)
  (let ((commit-message (magit-rev-format "%B"
	 				  (magit-rev-parse
	 				   (magit-branch-or-commit-at-point))))
	(bugs-base-url "https://bugs.python.org/issue")
	(pr-base-url "https://github.com/python/cpython/pull/")
	(bugs-pr-regex "bpo-\\([0-9]+\\).*\\(GH-\\|#\\)\\([0-9]+\\)"))
    (when (string-match bugs-pr-regex commit-message)
      (let ((bug-url (concat bugs-base-url (match-string 1 commit-message)))
	    (pr-url (concat pr-base-url (match-string 3 commit-message))))
	(browse-url bug-url)
	(browse-url pr-url)))))

(magit-define-popup-action 'magit-log-popup
  ?z
  "Open bug in browser"
  'python-bugs-url)

(my eyes!)