class_docstr: Provides python dict compatible way to do fetching and feeding
class_docstr_tok: ["Provides","python","dict","compatible","way","to","do","fetching","and","feeding"]
code: def __contains__(self, item):
      return C.has_blob(item)
  
imports: import collections
  import contextlib
  from google.protobuf.message import Message
  from multiprocessing import Process
  import os
  from collections import defaultdict
  import logging
  import numpy
  from past.builtins import basestring
  import shutil
  import socket
  import tempfile
  from caffe2.proto import caffe2_pb2
  from caffe2.python import scope, utils
  from caffe2.python.lazy import TriggerLazyImport
  import caffe2.python._import_c_extension
label_desc: Use image node_id 5 for calling the _BlobDict obj's underlying member method code with example usage: obj.__contains__(item) and returns: C