Python的bug

Python太火了，不学点都感觉自己不是学计算机的，今天看了个不错的《简明python教程》，很不错。不过在学习过程中，居然发现了一个Python的bug，

 

#!/usr/bin/python#coding=UTF-8class Person:'''Represents a person.'''population = 0def __init__(self, name):'''Initializes the person's data.'''self.name = nameprint '(Initializing %s)' % self.namePerson.population += 1def __del__(self):'''I am dying'''print '%s syas bye.' % self.namePerson.population -= 1if Person.population == 0:print 'I am the last one.'else:print 'There are still %d people left.' % /Person.populationdef sayHi(self):'''Greeting by the person.Really, that's all it does'''print 'Hi, my name is %s.' % self.namedef howMany(self):'''Prints the current population'''if Person.population == 1:print "I am the only person here"else:print 'We have %d persons here.' % Person.populationluolei = Person('luolei')luolei.sayHi()luolei.howMany()xiaoming = Person('Xiao Ming')xiaoming.sayHi()xiaoming.howMany()luolei.sayHi()luolei.howMany() 

 

Person在对象析构之前先析构了，在对象析构的时候找不到类的说明了。

 

避免这个bug的办法是在luolei前面加上一个_，即变成_luolei则没有问题，因为python会先析构前面有下划线的变量，如此NB的Python居然有这么个明显的问题，困惑

 

Python的版本：Python 2.6.4