Description

This accepts int, string, dict ({"main": int, "sub": int | None}) or DPT classes. It raises ValueError if no usable subclass is found.

Examples:

x = DPTBase.get_dpt(16)
reveal_type(x)  # -> type[DPTBase]

y = DPTNumeric.get_dpt(16)  # raises ValueError since DPT 16 is not Numeric
reveal_type(y)  # -> type[DPTNumeric]

DPTBase.get_dpt(DPTNumeric)  # raises ValueError since DPTNumeric is abstract (not a DPT definition, but a category of definitions)

DPTBase.get_dpt(DPTString)  # -> DPTString

DPTEnum.get_dpt({"main": 1, "sub": 8})  # -> DPTUpDown

cc @philippwaller
Fixes # (issue)

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Code quality improvements to existing code or addition of tests

Checklist

• The documentation has been adjusted accordingly
• Tests have been added that prove the fix is effective or that the feature works
• The changes are documented in the changelog (docs/changelog.md)