Method from_number

crates/vm/src/builtins/complex.rs:376–395

(cls: PyTypeRef, number: PyObjectRef, vm: &VirtualMachine)

    #[pyclassmethod]
    fn from_number(cls: PyTypeRef, number: PyObjectRef, vm: &VirtualMachine) -> PyResult {
        if number.class().is(vm.ctx.types.complex_type) && cls.is(vm.ctx.types.complex_type) {
            return Ok(number);
        }
        let value = number
            .try_complex(vm)?
            .ok_or_else(|| {
                vm.new_type_error(format!(
                    "must be real number, not {}",
                    number.class().name()
                ))
            })?
            .0;
        let result = vm.ctx.new_complex(value);
        if cls.is(vm.ctx.types.complex_type) {
            Ok(result.into())
        } else {
            PyType::call(&cls, vec![result.into()].into(), vm)
        }
    }
}

#[pyclass]