Python 3.5.2 (default, Sep 14 2017, 22:51:06) 
[GCC 5.4.0 20160609] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from reference_count import *
>>> import sys
>>> a = []
>>> sys.getrefcount(a)
2
>>> py_pointer(a)
<reference_count.py_pointer object at 0x7fb95c4046f8>
>>> sys.getrefcount(a)
2
>>> py_object(a)
<reference_count.py_object object at 0x7fb95c404768>
>>> sys.getrefcount(a)
4
>>> sys.getrefcount(a)
3
>>> sys.getrefcount(a)
3
>>> sys.getrefcount(a)
3
>>> sys.getrefcount(a)
3
>>>