"""Script demonstrating cleanup regression with weakref change

Prints nothing on earlier versions, but with Python 2.7 outputs similar to:
    Exception TypeError: "'NoneType' object is not callable" in <function
    _removeHandlerRef at 0x00C0EA70> ignored
"""
import os, logging

def register_handler():
    """Create, add, and remove a handler, and return it"""
    handler = logging.StreamHandler(open(os.devnull, "w"))
    logger = logging.getLogger("test")
    logger.addHandler(handler)
    logger.removeHandler(handler)
    return handler

if __name__ == "__main__":
    # This is a simplification, and depends on dict cleanup order
    logging._ref_holder = register_handler()