code: def __iter__(self):
      for from_page, to_pages in self.graph.items():
          yield from_page, to_pages
  
imports: import pprint
  from collections import OrderedDict, namedtuple
  import six
  import numpy
  import scipy.sparse
  from six.moves.urllib.parse import urlparse
  from pagerank import pagerank
label_desc: Use image node_id 10 for calling the WebPageGraph obj's underlying member method code with example usage: obj.__iter__() without return types