Emacs bulk indent for Python

Question

Working with Python in Emacs if I want to add a try/except to a block of code, I often find that I am having to indent the whole block, line by line. In Emacs, how do you inden

Answer 1

I've been using this function to handle my indenting and unindenting:

(defun unindent-dwim (&optional count-arg)
  "Keeps relative spacing in the region.  Unindents to the next multiple of the current tab-width"
  (interactive)
  (let ((deactivate-mark nil)
        (beg (or (and mark-active (region-beginning)) (line-beginning-position)))
        (end (or (and mark-active (region-end)) (line-end-position)))
        (min-indentation)
        (count (or count-arg 1)))
    (save-excursion
      (goto-char beg)
      (while (< (point) end)
        (add-to-list 'min-indentation (current-indentation))
        (forward-line)))
    (if (< 0 count)
        (if (not (< 0 (apply 'min min-indentation)))
            (error "Can't indent any more.  Try `indent-rigidly` with a negative arg.")))
    (if (> 0 count)
        (indent-rigidly beg end (* (- 0 tab-width) count))
      (let (
            (indent-amount
             (apply 'min (mapcar (lambda (x) (- 0 (mod x tab-width))) min-indentation))))
        (indent-rigidly beg end (or
                                 (and (< indent-amount 0) indent-amount)
                                 (* (or count 1) (- 0 tab-width))))))))

And then I assign it to a keyboard shortcut:

(global-set-key (kbd "s-[") 'unindent-dwim)
(global-set-key (kbd "s-]") (lambda () (interactive) (unindent-dwim -1)))