code: def __iter__(cls):
      from funsor.terms import Number
  
      return (Number(i, cls.size) for i in range(cls.size))
  
imports: import copyreg
  import functools
  import inspect
  import operator
  import warnings
  from functools import reduce
  from weakref import WeakValueDictionary
  import funsor.ops
  from funsor.ops.builtin import parse_ellipsis, parse_slice
  from funsor.util import broadcast_shape, get_backend, get_tracing_state, quote
label_desc: Use image node_id 4 for calling the BintType obj's underlying member method code with example usage: obj.__iter__(cls) and returns: unknown