Read the code carefully

import gc
import weakref

deaths = []


def watcher(name):
    deaths.append(name)


class Node:
    def __init__(self, name):
        self.name = name
        self.peer = None


a = Node("a")
b = Node("b")
a.peer = b
b.peer = a
weakref.finalize(a, watcher, "a")
weakref.finalize(b, watcher, "b")

gc.disable()
del a
del b
print(f"after_del:{deaths}")

gc.collect()
print(f"after_gc:{sorted(deaths)}")
gc.enable()

What will the program print? Write here: