fetching from object takes endless time

[IbtihalFerwana]

I'm loading a json file to a bigjson object, and iterating through items. Consider the following example:

with open('fileA.json`,'rb') as f:
   dictA = bigjson.load(f)
   for k,v in dictA.iteritems():
      list_v = np.array(v)
      for v1 in list_v:
         item = dictA['v1'] ### this line takes endless time without execution. 

the last line never ends execution.