52 lines
1 KiB
Python
52 lines
1 KiB
Python
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# Data Conversion Helpers:
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from typing import List, Dict, Any, TypeVar, Callable, Type, cast
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T = TypeVar("T")
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def from_float(x: Any) -> float:
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assert isinstance(x, (float, int)) and not isinstance(x, bool)
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return float(x)
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def to_float(x: Any) -> float:
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assert isinstance(x, float)
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return x
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def from_str(x: Any) -> str:
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assert isinstance(x, str)
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return x
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def from_int(x: Any) -> int:
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assert isinstance(x, int) and not isinstance(x, bool)
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return x
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def to_class(c: Type[T], x: Any) -> dict:
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assert isinstance(x, c)
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return cast(Any, x).to_dict()
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def from_list(f: Callable[[Any], T], x: Any) -> List[T]:
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assert isinstance(x, list)
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return [f(y) for y in x]
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def from_str(x: Any) -> str:
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assert isinstance(x, str)
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return x
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def from_dict(f: Callable[[Any], T], x: Any) -> Dict[str, T]:
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assert isinstance(x, dict)
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return {k: f(v) for (k, v) in x.items()}
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def to_class(c: Type[T], x: Any) -> dict:
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assert isinstance(x, c)
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return cast(Any, x).to_dict()
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