I took this one several times growing up, I didn't learn the word roundabout until much later, but I don't think I've ever heard someone refer to it as a rotary
Maths Cat
@secantsphinx.bsky.social
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Baseball, cats, sometimes space. Software Engineer. Opinions are my own. She/her Abolish ICE READ THE F*CKING README
 -> Callable[[Callable[P, R]], Callable[P, R]]:
def deco(func: Callable[P, R]) -> Callable[P, R]:
@functools.wraps(func)
def wrapper(*args: P.args, **kwargs: P.kwargs) -> R:
# do some stuff based on param
return func(*args, **kwargs)
return wrapper
return deco
@desc("something")
def func() -> int:
return 0
```](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:tvgmyombx4b4sryl2hedswiz/bafkreibnsnfc5skjcycssgaurttn7o5sjluuqrtmpiofxfd6jj4ddctxzy)
![A screenshot of some sample code, using a generic decorator type alias and providing `Callable` with a ParamSpec type arguments
```python
import functools
from pathlib import Path
from typing import Any, Callable
type _Decorator[F: Callable[..., Any]] = Callable[[F], F]
def desc[**P, R = Path](param: str) -> _Decorator[Callable[P, R]]:
def deco(func: Callable[P, R]) -> Callable[P, R]:
@functools.wraps(func)
def wrapper(*args: P.args, **kwargs: P.kwargs) -> R:
# do some stuff based on param
return func(*args, **kwargs)
return wrapper
return deco
@desc("something")
def func() -> int:
return 0
```](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:tvgmyombx4b4sryl2hedswiz/bafkreifzpvcdj4euzyu4mxthnv2zyyj6vsiehwc72o2hhsraop6s3xep4m)
![A screenshot of some sample code, using a generic decorator type alias and providing a bound function type as the argument
```python
import functools
import types
from typing import Any, Callable, cast
type _Decorator[F: Callable[..., Any]] = Callable[[F], F]
def desc[F: types.FunctionType](param: str) -> _Decorator[F]:
def deco(func: F) -> F:
@functools.wraps(func)
def wrapper(*args: Any, **kwargs: Any) -> Any:
# do some stuff based on param
return func(*args, **kwargs)
return cast(F, wrapper)
return deco
@desc("something")
def func() -> int:
return 0
```](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:tvgmyombx4b4sryl2hedswiz/bafkreifm5wzypzs5rlyuypcn25gnd5zxxsuiuoljhbrdiwpzt2gtrxfzla)
![A screenshot of some sample code, using a generic decorator type alias and providing a bound `Callable[..., Any]` type as the argument
```python
import functools
import types
from typing import Any, Callable, cast
type _Decorator[F: Callable[..., Any]] = Callable[[F], F]
def desc[F: Callable[..., Any]](param: str) -> _Decorator[F]:
def deco(func: F) -> F:
@functools.wraps(func)
def wrapper(*args: Any, **kwargs: Any) -> Any:
# do some stuff based on param
return func(*args, **kwargs)
return cast(F, wrapper)
return deco
@desc("something")
def func() -> int:
return 0
```](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:tvgmyombx4b4sryl2hedswiz/bafkreih2o5jipssl6rw2f7zy6hx3khhr4vsyb732iqc3xnltmnilg22fgq)
