@decorator example

[elbaro]

@pyo3_module.cls_decorator(1, 2, a=3, b=[4])
class A:
  pass

@pyo3_module.fn_decorator(1, 2, a=3, b=[4])
async def f():
  pass

An example or documentation on how to write a decorator in pyo3 would be great.
It also would be a good example teaching how to wrap a dynamically generated closure into pyfunction.

[mejrs]

Absolutely - we should have a chapter on that.

It also would be a good example teaching how to wrap a dynamically generated closure into pyfunction.

You can't really do that at the moment, but you can create a pyclass with a __call__ method, much like how you can (in Python) implement decorators as classes rather than functions.

[davidhewitt]

(Regarding the closure -> pyfunction, probably talking about #804. Howver there has been no real research into it.)