How to remove or overwrite a `yasnippets`?

Question

I am using Python but some pre-defineted snippets are acting not as I wanted, hence I want to remove some, if possible.

In most cases, I am using TAB for indent alignment, hence yasnippets apply themselve, which is pretty annoying.

For example:

In a Python file writing log and press TAB, emacs write followings code piece, which I want to disable:

logger = logging.getLogger("name")
        logger.setLevel(logging.level)

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my setup:

(add-hook 'python-mode-hook 'lsp)
(add-hook 'python-mode-hook #'lsp-deferred)

# taken from: https://github.com/joaotavora/yasnippet
(add-to-list 'load-path
              "~/.emacs.d/plugins/yasnippet")
(require 'yasnippet)
(yas-global-mode 1)

---

Hide Yas Snippet Dirs: [Value Menu] List of directories:
[INS] [DEL] Choice: [Value Menu] Directory: ~/.emacs.d/snippets
[INS] [DEL] Choice: [Value Menu] Variable: yasnippet-snippets-dir
[INS] [DEL] Choice: [Value Menu] Variable: yasnippet-classic-snippets-dir

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Please note that when I try to create a new snippet it generates it under /home/user/etc/yasnippet/snippets/python-mode/ instead of ~/.emacs.d/snippets.

Default snippets are located under /usr/share/yasnippet-snippets/python-mode; but since they require permission would it be a good idea to remove the ones that I don't want to use?

---

For example I want to remove following snippet keys for:

__str__, str, size, def, self, __

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Basically,I just want to remove all key snippets for the given key. For example, when I type str and press TAB emacs says:

Possible completions are:
__str__                              str
. Choose a snippet:

where I don't want to see neither of it and completely remove all keys for the str key.

Answer 1

It is not a good idea to remove a snippet from their place - at first update of yasnippet-snippet package, it will be again present in your Emacs.

So, a simpler method is to create new or modify/rename/save to the default yas-snippet-dir, which is ~/.emacs.d/snippets folder (if you did not modify it already). But to be organised, add here a new folder python-mode where the new python snippets will be placed.

To modify an existing snippet and to place it in the default folder created, visit it and then use the command save-as, bound to C-x C-w instead the usual save command C-x C-s. The “save-as” will allow you to choose destination folder.

The last thing to do is to take care to load all snippets (the original ones + yours) after python-mode is loaded - so add the line (yas-reload-all) after python mode is configured.

Answer 2

It might be easiest to remove the template in your init file after yasnippets is loaded. That way you don't have to modify the system directories. I think this should do it:

(yas--remove-template-by-uuid (yas--table-get-create 'python-mode) "logging")