class_docstr: Wrap an iterable in an object that stores the count of items
  that pass through it.
  
  >>> items = Counter(range(20))
  >>> items.count
  0
  >>> values = list(items)
  >>> items.count
  20
code: def __iter__(self):
      return self
  
file_path: cpython/Lib/test/test_zipfile/_path/_itertools.py
imports: import itertools
  from collections import deque
  from itertools import islice
label_desc: Use image node_id 2 for calling the Counter obj's underlying member method code with example usage: obj.__iter__() and returns: self