First import in the interpreter always fails in python 3.13

[dariuszd21]

Hi!

I've tried to play with the interpreter from the python:3.13-25.04_stable image, but it seems that whatever I do the first import always fails.
If I import something again, then it just works.

I think it might be due to the REPL change that was part of python 3.13 PEP and changelog

Here is a quick reproducer:

❯ podman run -ti -u 1000 --rm docker.io/ubuntu/python:3.13-25.04_stable exec -ti /usr/bin/python3.13
Python 3.13.3 (main, Aug 14 2025, 11:53:40) [GCC 14.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import os
ModuleNotFoundError: No module named '_pyrepl'
>>> os.path
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
    os.path
    ^^
NameError: name 'os' is not defined. Did you forget to import 'os'?
>>> import os
>>> os.path
<module 'posixpath' (frozen)>
>>>

[dariuszd21]

That looks like it might be helpful:
https://github.com/canonical/chisel-releases/blob/ubuntu-25.04/slices/libpython3.13-stdlib.yaml#L369-L375