In CPython: ```python >>> from collections import deque >>> class MyDeque(deque): pass >>> MyDeque() 'MyDeque([])' ``` While in RustPython: ```python >>>>> from collections import deque >>>>> class MyDeque(deque): pass >>>>> MyDeque() deque([]) ``` This needs to be applied for `set`, `frozenset` and `bytearray` too. Prior similar work: #3137