我正在尝试理解这段代码：
class Person:
'''Represents a person '''
population = 0
def __init__(self,name):
//some statements and population += 1
def __del__(self):
//some statements and population -= 1
def sayHi(self):
'''grettings from person'''
print 'Hi My name is %s' % self.name
def howMany(self):
'''Prints the current population'''
if Person.population == 1:
print 'i am the only one here'
else:
print 'There are still %d guyz left ' % Person.population
rohan = Person('Rohan')
rohan.sayHi()
rohan.howMany()
sanju = Person('Sanjivi')
sanju.howMany()
del rohan # am i doing this correctly?
如何调用析构函数 – 自动或者我必须在上面的“main”程序/类中添加一些东西？
输出：
Initializing person data
******************************************
Initializing Rohan
******************************************
Population now is: 1
Hi My name is Rohan
i am the only one here
Initializing person data
******************************************
Initializing Sanjivi
******************************************
Population now is: 2
In case Person dies:
******************************************
Sanjivi Bye Bye world
there are still 1 people left
i am the only one here
In case Person dies:
******************************************
Rohan Bye Bye world
i am the last person on earth
Population now is: 0
