Python: TypeError: AuthenticationString object tracing denied for security reasons

Question

Python: TypeError: AuthenticationString object tracing denied for security reasons

I create an object of class (c multiprocessing) and add it to Manager.dict()so that I can remove an element from the dictionary inside the object (the item points to) when its work is completed ..

I tried the following code:

from multiprocessing import Manager, Process

class My_class(Process):
    def __init__(self):
        super(My_class, self).__init__()
        print "Object", self, "created."

    def run(self):
        print "Object", self, "process started."


manager=Manager()
object_dict=manager.dict()

for x in range(2):
    object_dict[x]=My_class()
    object_dict[x].start()

But I have an error:

TypeError: Pickling an AuthenticationString object is disallowed
for security reasons

For curiosity, I removed the multiprocessor part and tried how:

from multiprocessing import Manager
class My_class():
    def __init__(self):
        print "Object", self, "created."

manager=Manager()
object_dict=manager.dict()

for x in range(2):
    object_dict[x]=My_class()