import tracemalloc
import gc

tracemalloc.start(5)

class Point:
    def __init__(self):
        self.x = 1
        self.y = 2

gc.collect()

p = Point() # first object (dead!)
p = None

p = Point() # second object (alive)

tb = tracemalloc.get_object_traceback(p.__dict__)
for line in tb.format():
    print(line)