Method __contains__

crates/stdlib/src/array.rs:1171–1185

(&self, value: PyObjectRef, vm: &VirtualMachine)

        }

        fn __contains__(&self, value: PyObjectRef, vm: &VirtualMachine) -> bool {
            let array = self.array.read();
            for element in array
                .iter(vm)
                .map(|x| x.expect("Expected to be checked by array.len() and read lock."))
            {
                if let Ok(true) =
                    element.rich_compare_bool(value.as_object(), PyComparisonOp::Eq, vm)
                {
                    return true;
                }
            }

            false
        }

        #[pyclassmethod]
        fn __class_getitem__(