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I am using doom emacs and would like to create a key binding to run the following line so that I don't need to write it every time I want to run a block of code of python

:w !python

The above line runs python code highlighted in visual mode in the terminal.

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1 Answer 1

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The cleanest way is to not reuse Evil-specific commands or keystrokes unless absolutely necessary. Looking at the definition of :w, which happens to be the evil-write command, one can see that it parses the file name argument and calls shell-command-on-region if it starts with a bang. Here's the equivalent specialized command:

(defun my-evil-run-python-region (beg end)
  (interactive "r")
  (if (region-active-p)
      (shell-command-on-region beg end "python")
    (shell-command-on-region (point-min) (point-max) "python")))

(global-set-key (kbd "<F5>") 'my-evil-run-python-region)
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  • I am new to emacs so I spent hours trying to figure this out but with no success.I figured there must be something I am doing wrong so i wrote my question. I tried your code and it worked. I don't have enough points to vote for your answer now but should do when I have. Thank YOU!!
    – Moh
    Jul 30, 2020 at 9:03
  • Thanks. I think you should be able to mark it as preferred answer though, so that the question shows up as solved.
    – wasamasa
    Jul 30, 2020 at 9:09
  • Done. Thank You!!
    – Moh
    Jul 30, 2020 at 9:39

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