How can I register a py class method into rust as a callback func and delay exec it when event comes？

[sun-rs]

I know that pyo3 colud use call_method0 and call_method1 to call a py function. But if I dont want exec it instantly and want to register the func as callback. How to do that？

[adamreichold]

Get a handle on the method itself using let method: Py<PyAny> = object.getattr("method-name")?.into(); where object is a &PyCell<MyRustClass>. You can store method where you want and when the time comes call it using method.call1(py, (...))?;.

[sun-rs]

Is it also work around for object is a pure python class as pyany？

[adamreichold]

Yes.