Method _contains

crates/vm/src/builtins/mappingproxy.rs:121–130

(&self, key: &PyObject, vm: &VirtualMachine)

    }

    fn _contains(&self, key: &PyObject, vm: &VirtualMachine) -> PyResult<bool> {
        match &self.mapping {
            MappingProxyInner::Class(class) => Ok(key
                .as_interned_str(vm)
                .is_some_and(|key| class.attributes.read().contains_key(key))),
            MappingProxyInner::Mapping(mapping) => {
                mapping.obj().sequence_unchecked().contains(key, vm)
            }
        }
    }

    pub fn __contains__(&self, key: PyObjectRef, vm: &VirtualMachine) -> PyResult<bool> {
        self._contains(&key, vm)