Where do I define UtliSnips snippets for Python?

Question

I am using UltiSnips for my snippets. I have only used LaTeX snippets with UltiSnips, which I defined in a tex.snippets file inside of an UltiSnips directory in my runtimepath.

Now, I would like to write snippets for Python as well. How do I do it? Is there a particular name I have to give to the .snippets file? Is there a different syntax for Python snippets?

Answer 1

:UltiSnipsEdit will automatically open ultisnips for current filetype. From there you can see that it's supposed to be python.snippets.

Answer 2

UltiSnips uses a strategy similar to how Vim detects :h ftplugins. That is, it will look for the filenames that match the following pattern in your UltiSnips directory: ft.snippets, ft_*.snippets, or ft/*, where ft is replaced with your Vim filetype (python, c, etc.) and * matches any string including the empty string. A table from :h UltiSnips-how-snippets-are-loaded:

snippet filename         filetype ~
ruby.snippets            ruby
perl.snippets            perl
c.snippets               c
c_my.snippets            c
c/a                      c
c/b.snippets             c
all.snippets             all
all/a.snippets           all

So, to write snippets for the python filetype, you can use UltiSnips/python.snippets (or UltiSnips/python_classes.snippets, or UltiSnips/python/classes.snippets, for example).

All *.snippet files use the same syntax, regardless of filetype.