Today I was playing with a small Python program using Python 2.4 on Cygwin (up-to-date version, on Windows XP), but ran into a strange error on the following small program (named bug.py):
------------------------------- #!/usr/bin/python class Person: population = 0 def __del__(self): Person.population -= 1 peter = Person() ------------------------------- The error returned is this: $ python bug.py Exception exceptions.AttributeError: "'NoneType' object has no attribute 'population'" in <bound method Person.__del__ of <__main__.Person instance at 0xa0c9fec>> ignored However, if I rename variable name 'peter' to something like 'peter1' or 'david', the error is gone. Looks to me the error only happens to variable name 'peter'. Does anyone know what is wrong? Is this a bug only on Cygwin? - Baoqiu -- http://mail.python.org/mailman/listinfo/python-list
