Python code-folding in emacs?

Question

I have many classes and defs ...

I want to have + and - keys before class and def to collapse the class or open it ( toggle it ).

How i can do this?

Do you care about the functionality (code folding) or the +, - signs? Emacs is keyboard-based so it doesn't really make sense to use the mouse for toggling the +, -. Check 1085170 — sakisk
– sakisk, Commented Mar 9, 2011 at 12:35
no surly ... only i want see class is collapse and then open it and in other way — Mohammad Efazati
– Mohammad Efazati, Commented Mar 9, 2011 at 12:39
Good. See the link that I gave you; In the link there is a reference to the Emacs folding mode which might work for you. — sakisk
– sakisk, Commented Mar 9, 2011 at 12:45
Are you sure? Take a careful look in the python-related answer of 1085170 and the Ruby trick in the Emacs Wiki. Both ways look reasonable but you need to put some effort since python code is not wrapped using blocks like {}. — sakisk
– sakisk, Commented Mar 9, 2011 at 12:54
I haven't know that Emacs do code folding. This question is one of my favs! — swdev
– swdev, Commented Mar 9, 2011 at 13:26

Greg · Accepted Answer · 2013-07-21 19:10:02Z

52

Hideshow works out of the box and folds python code. It is built-in my version of emacs (24.3.1)

I have never needed more than these commands:

M-x hs-minor-mode
M-x hs-hide-all
M-x hs-show-all

To toggle use C-c @ C-c which probably needs rebinding. You might also want to setup a hook in your .emacs file for hs-minor-mode to automatically be enabled when opening .py files.

I use it in combination the following to jump around.

M-x imenu <my_func_name>

answered Jul 21, 2013 at 19:10

Greg

2,09420 silver badges11 bronze badges

Sign up to request clarification or add additional context in comments.

6 Comments

modulitos Over a year ago

This works great! But with a really large Python file (~5000 lines), things start lagging as I fold more classes. If I don't fold too many classes, it's okay. Specifically when I fold one class, ~1500 lines, it really slows down. I'm also using Elpy, which may be a factor.

cammil Over a year ago

5000 lines python file!? Is there a good reason for such a large file?

user240438 Over a year ago

@cammil Maybe not, but I don't think the text editor is the right place to enforce that norm. If nothing else, I should be able to use code folding to help deal with managing the 5000 line file when I go to refactor it.

Torsten Bronger Over a year ago

How can I print the folded code? ps-print-buffer exports unfolded always.

Arun Kumar Khattri Over a year ago

for all the other command related to hs-minor-mode

|

Community · Accepted Answer · 2017-05-23 11:46:57Z

6

You can get code folding (and more) with CEDET. With CEDET, you should consider putting the following setting in your emacs configuration file:

(global-semantic-folding-mode t)

CEDET handles Python and other languages.

Other ideas about how you can make emacs even more convenient when programming can be found on StackOverflow.

edited May 23, 2017 at 11:46

CommunityBot

11 silver badge

answered Mar 9, 2011 at 17:40

Eric O. Lebigot

95.1k49 gold badges223 silver badges263 bronze badges

1 Comment

Sean Allred Over a year ago

CEDET seems to be included with Emacs 24, but this function isn't available. Has this changed in two years?

Collectives™ on Stack Overflow

Python code-folding in emacs?

2 Answers 2

6 Comments

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

6 Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related