import unittest
from _weakrefset import WeakSet
#import sys

dangling = WeakSet()

print("IMPORT test_leak")

class Thread2:
    pass

main_thread = Thread2()
dangling.add(main_thread)

class SysModuleTest(unittest.TestCase):
    def test_current_frames(self):
        t = Thread2()
        dangling.add(t)
        t = None
        #print(sys.getallocatedblocks())