optres 0.1.0

Yet another Rust's Option<T> and Result<T, E> simple implementation in Python.

optres

Yet another Rust's Option<T> and Result<T, E> simple implementation in Python.

Installation

python3 -m pip install -U optres

Example

from optres import unwrap, Result, Err, is_ok, is_err, unwrap_err
from typing import LiteralString


def return_result(x: int | None) -> Result[int, LiteralString]:
    return Err("not int") if x is None else x


def example() -> None:
    a: int | None = 1
    c: int = unwrap(a)
    print(c)
    assert is_ok(return_result(a))
    a = None
    # unwrap(a) # error := panic in Rust.
    may_be_err = return_result(a)
    assert is_err(may_be_err)
    print(unwrap_err(may_be_err))


if __name__ == "__main__":
    example()