This issue is not able to solve until #2869 solved.

dataclasses module calls inspect._signature_from_callable and it compares __new__ built-in method.
Though empty class doesn't have additional __new__ method definition but RustPython implementation always bind new bound method for each types.

References

RustPython/vm/src/pyobject.rs

Lines 391 to 397 in 8cf3506

    
           pub fn add_slot_wrappers(&self, ty: &PyTypeRef) { 
        
               if !ty.attributes.read().contains_key("__new__") { 
        
                   let new_wrapper = 
        
                       self.new_bound_method(self.tp_new_wrapper.clone(), ty.clone().into_object()); 
        
                   ty.set_str_attr("__new__", new_wrapper); 
        
               } 
        
           }

https://github.com/python/cpython/blob/fa919fdf2583bdfead1df00e842f24f30b2a34bf/Lib/inspect.py#L2367-L2368:

# _signature_from_callable
                if (obj.__init__ is object.__init__ and
                    obj.__new__ is object.__new__):

	pub fn add_slot_wrappers(&self, ty: &PyTypeRef) {
	if !ty.attributes.read().contains_key("__new__") {
	let new_wrapper =
	self.new_bound_method(self.tp_new_wrapper.clone(), ty.clone().into_object());
	ty.set_str_attr("__new__", new_wrapper);
	}
	}

Missing dataclasses module #2623

Description

Feature

Python Documentation

Metadata

Metadata

Assignees

Labels

Type

Fields

Projects

Milestone

Relationships

Development

Issue actions