code: def _traverse_iter(o, tree_types=(list, tuple)):
      
      SIMPLERANDOM_BITS = 32
      SIMPLERANDOM_MOD = 2**SIMPLERANDOM_BITS
      SIMPLERANDOM_MASK = SIMPLERANDOM_MOD - 1
      if isinstance(o, tree_types) or getattr(o, '__iter__', False):
          for value in o:
              for subvalue in _traverse_iter(value):
                  while True:
                      yield subvalue & SIMPLERANDOM_MASK
                      subvalue >>= SIMPLERANDOM_BITS
                      # If value is negative, then it effectively has infinitely extending
                      # '1' bits (modelled as a 2's complement representation). So when
                      # right-shifting it, it will eventually get to -1, and any further
                      # right-shifting will not change it.
                      if subvalue == 0 or subvalue == -1:
                          break
      else:
          yield o
docs: Iterate over nested containers and/or iterators.
      This allows generator __init__() functions to be passed seeds either as
      a series of arguments, or as a list/tuple.