Python中小错误 之 object() takes no parameters

[python] view plain copy 在CODE上查看代码片派生到我的代码片 class Person :      population=0      def __init__(self,name):          self.name=name          print ('Initializing %s'  % self.name)          Person.population+=1      def sayHi(self):          print ('hi，My name is %s.' % self.name)        def howMany(self):          if Person.population==1:              print ('I am the current population .')          else:              print ('We have  %d persons here ' % Person.population)      swaroop=Person('Swaroop')  swaroop.sayHi()  swaroop.howMany()    kalam=Person('Abdul kalam')  kalam.sayHi()  kalam.howMany()    swaroop.sayHi()  swaroop.howMany()  

如上面python代码，是学习python类时遇到的一个小例子。但是在运行时会报错：

Traceback (most recent call last):
  File "E:/PythonStudy/objvar.py", line 18, in <module>
    swaroop=Person('Swaroop')
TypeError: object() takes no parameters

经过查阅资料才知道，是构造函数里的下划线的问题，

__init__(self,name)这个构造函数的左右下划线都是两个，我只用了一个，导致错误。