29 lines
557 B
Python
29 lines
557 B
Python
"""An error-handling model influenced by that used by the Rust programming language
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See https://doc.rust-lang.org/book/ch09-00-error-handling.html.
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"""
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from typing import Generic, TypeVar, Union
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T = TypeVar("T")
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E = TypeVar("E", bound=Exception)
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class Ok(Generic[T]):
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def __init__(self, value: T) -> None:
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self._value = value
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def ok(self) -> T:
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return self._value
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class Err(Generic[E]):
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def __init__(self, e: E) -> None:
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self._e = e
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def err(self) -> E:
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return self._e
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Result = Union[Ok[T], Err[E]]
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