How to convert a string "<... object at POINTER>" to an object?

[Gribouillis]

You want to serialize python objects, use the pickle module

>>> class MyClass:
...     def test(self):
...         print('Hello!')
... 
>>> obj = MyClass()
>>> import pickle
>>> s = pickle.dumps(obj)
>>> s
b'\x80\x03c__main__\nMyClass\nq\x00)\x81q\x01.'
>>> obj2 = pickle.loads(s)
>>> obj2.test()
Hello!

In this example pickle serializes a MyClass instance as a bytes object that can potentially be stored in a file and reused later.