code: def __init__(self, it):
      self._it = it
      self._pushed = []
  
imports: import sys
  import numpy
  import six
  from six.moves import cStringIO
  from .compat import optional_dep_ok
label_desc: Use image node_id 1 to create a new PushbackAdapter object from inherited base classes: object with example: obj = PushbackAdapter(it)