from collections.abc import Callable
from functools import wraps
def my_decorator[T, **P](fn: Callable[P, T]) -> Callable[P, T]:
Oliver Lambson oliverlambson
oliverlambson
/ typed_decorator.md
Last active
September 15, 2024 23:26
The right way to type python decorators
click doesn't have a builtin date type, only a datetime. (They won't be adding one either.)
This litters my cli code with an annoying convert to date chore that I end up using all over the place:
@click.command()
oliverlambson
/ rust-go-result-type-python.md
Last active
September 1, 2024 22:25
Rust & Go-style return types in Python
Lightweight, generic result type à la Rust. (Sometimes you just want errors as values.)
Note: There is a full-on package that does this, with all the other Rust niceties of
.unwrap_or(), etc. But if all you need is the basics, this is a zero-dependency approach in like 8 lines of actual code.
from dataclasses import dataclass