type UnpicklingError

              object --+            
                       |            
exceptions.BaseException --+        
                           |        
        exceptions.Exception --+    
                               |    
                     PickleError --+
                                   |
                                  UnpicklingError

This exception is raised when there is a problem unpickling an object, such as a security violation.

Note that other exceptions may also be raised during unpickling, including (but not necessarily limited to) AttributeError, EOFError, ImportError, and IndexError.