python3 contains turtle.py without python3-tk installed

[Tan Chenyu]

When I using python3 without installing python3-tk,
the "import turtle" command returns "No module named 'tkinter'" instead of "No module named 'turtle'".

Here is a transcript:
$ python3
Python 3.11.2 (main, Sep 14 2024, 03:00:30) [GCC 12.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import turtle
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python3.11/turtle.py", line 107, in <module>
    import tkinter as TK
ModuleNotFoundError: No module named 'tkinter'

I suggest that the turtle.py be put into python3-tk, not python3.
It is recommended that python3.13 be modified first.
There is the same issue on Debian, but I always failed to sent email :(
The familiar issue on Windows has been fixed: https://github.com/python/cpython/pull/126176

[Stefano Rivera (stefanor)]

I swear I've seen this bug filed somewhere else before, but I can't find it.

The turtle module would not be a good fit in python3-tk. The rigth thing to do here is to just emit a more helpful error message.

[Tan Chenyu (ubuntu-tcy-deactivatedaccount)]

Well, I checked deb file. Though it is not fit with python3-tk, it should fit with python3.13-tk.

[Launchpad Janitor (janitor)]

This bug was fixed in the package python3.13 - 3.13.2-1

---------------
python3.13 (3.13.2-1) unstable; urgency=medium

  * Python 3.13.2.
  * Refresh patches.
  * Raise a more helpful ImportError in the turtle module. LP: #2093393.
  * Replace locale-module.patch with something to the change that landed
    upstream, and just missed 3.13.2.
  * Patch: update manpage, it has been neglected for a few releases.
    Closes: #1095052
  * Update symbols.

 -- Stefano Rivera <email address hidden> Tue, 04 Feb 2025 21:23:35 -0400