Add language code definitions and test

[07pepa]

I added language definitions

[codecov]

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All modified and coverable lines are covered by tests ✅

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  Coverage   100.00%   100.00%           
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  Files           11        12    +1     
  Lines          685       724   +39     
  Branches       169       179   +10     
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[yezz123]

Hello @07pepa That's a great start for the PR, but we should now add Pydantic CoreSchema & the validation - check here an example, also including a test for JSON schema - check here

[07pepa]

Hello @07pepa That's a great start for the PR, but we should now add Pydantic CoreSchema & the validation - check here an example, also including a test for JSON schema - check here

I am not sure how/why to add this to literal (since it is supported by pydantic)
also litteral is recomended for "enumerations" https://docs.pydantic.dev/latest/concepts/performance/#use-literal-not-enum

I am not sure what you want me to do. please tell me how to do it or just modify the code.. i am fine with that.

Only thing i would add now is a check if all codes are supported with help of some online source of truth (but that would complicate the test code considerably. and we would have to decide on source of truth

[yezz123]

Hello @07pepa,

Thank you for your contribution! This PR is indeed valuable, particularly in terms of structuring the data. However, I'd like to propose an enhancement, we can use pycountry for not only countries but also languages, this ensuring consistency and using existing resources already.

As we're already utilizing pycountry for country data, integrating language support from pycountry seems like a natural extension. By doing so, we can ensure uniformity and benefit from the robustness of pycountry's language code support.

Here are some initial resources to help kickstart this integration:

• pydantic_extra_types/country.py
• Language data in pycountry
• Supported class in pycountry

Once we establish a similar structure as the one we have for countries in country.py, we can seamlessly support language codes as well. This enhancement would be highly beneficial. Thank you for considering it! 🙏🏻

[07pepa]

good point i will look in detail on monday

[07pepa]

@yezz123 i am finished .... and test are passing (test are exhaustive)

can you add your input on this code or just merge it .... i will probably add curecies next

[yezz123]

LGTM ⭐ Thank you @07pepa 🙏🏻

I've added documentation to each function and class, and I will open a PR to add it to the documentation as soon as we release a new version.