Retrieving the list of references to an object in Python

Question

All:

a = 1
b = a
c = b

Now I want to get a list of object 1 tagged, which is [a, b, c]. How could I do this?

Answer 1

As you can see, it's impossible to find them all.

>>> sys.getrefcount(1)
791
>>> sys.getrefcount(2)
267
>>> sys.getrefcount(3)
98