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import shelve
class Waiting:
   def __init__(self):
       self.name = 'Waiting'
       self.List = []
bd = shelve.open('Data')
bd['Waiting'] = Waiting()
bd.close()
bd = shelve.open('Data')
print(bd['Waiting'].name)

Error:
Traceback (most recent call last):
 File "<input>", line 1, in <module>
 File "C:\Python34\lib\shelve.py", line 114, in __getitem__
   value = Unpickler(f).load()
EOFError: Ran out of input