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Suppose I want to debug Python script in Emacs. M-x pdb run pdb like this pdb script name.py. Next I'd like to examine a variable. I type p and first letters of a variable name, then press Tab and instead of completion of the variable name cursor moves right. Ho to achieve completion of a variable name on Tab press while debugging Pyhon in Emacs?

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I have used M-x pdb on and off for quite some time now, and while I would love to be corrected on this, unfortunately I don't think it supports tab completion.

I have recently started playing with RealGUD, and if you use this package with ipdb instead of pdb you will get some really nice features including tab completion.

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M-x pdb is nice because it is built in, but I personally have never found it to be satisfactory for my needs.

  • I installed realgud through melpa (GNU Emacs 24.3.1, Ubuntu 14.04). realgud:ipdb puts a lot of unreadable garbage in buffer and tab completion doesn't work either. It posts the message no prompt found or comint-pomp-regexp not set properly. – Alexey Reshetnyak Aug 20 '16 at 5:13
  • @AlexeyReshetnyak I am not sure what the problem is. I am on Emacs 24.5.1 and Ubuntu Gnome 16.04. I included a screenshot to what it looks like for me out of the box. Includes nicely formatted context for where you are in the script, which I like. Maybe a little busy for some though. The only dependency I installed was python-ipdb through apt. – elethan Aug 20 '16 at 12:19
  • elethan, I installed the latest version of Emacs (25.1.50), but it didn't solve the problem. Still have garbage in console. Anyway thank you for the answer it might be useful to someone. – Alexey Reshetnyak Aug 20 '16 at 15:01

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