Many modules contain translatable strings.  CPython does not ship with translations of any of them and I believe it is against policy to do so.

1. Core developers, though an international group, are not competent to create or approve translations.
2. Core developers feel that professional Python users must gain basic English proficiency.

If you want to discuss this further, please discuss on python-ideas list, possibly after trying to find previous discussions, not here. We only allowed 'official' translations of the docs about a year ago and those are done by a group separate from the core developers.