# coding='utf-8'class User():def __init__(self,name,sex):self.name = nameself.sex = sexprint '这里是构造函数'def setName(self,name):self.name = namedef getName(self):return self.name
user = User("python",'男')
user.setName("ruby")
print user.getName()
print user.name
print user.sex
#===========打印结果===============
#这里是构造函数
#ruby
#ruby
#男

ruby的类定义

require 'jcode'
$KCODE='u'class Userattr_accessor :name,:sexdef initialize(name,sex)@name = name@sex = sexp 'this is a constructor'enddef get_name@nameenddef set_name(name)@name = nameendenduser = User.new('Ruby','11')
user.set_name('rubyruby')
p user.get_name
p user.name
p user.sex

javascript的类定义

      function User(name,sex){this.name = name;this.sex = sex;alert("这里是构造函数")}User.prototype ={getName : function(){return this.name},setName :function(name){this.name = name}}var user = new User("XXX",'man')user.setName("YYY");alert(user.name)alert(user.sex)

# -*- coding:utf-8 -*-
# 这是一个简单的类,用于输出一个精确到小数点后两位的浮点数class RoundFloatManual(object):def __init__(self,val):assert isinstance(val,float),\"Value must be a float"self.value = round(val,2)def __str__(self):return '%.2f' % self.value
rfm = RoundFloatManual(4.288)
print rfm

# -*- coding:utf-8 -*-class Time60(object):'用于小时与分钟的加减法运算'def __init__(self, hr=0, min=0):self.hr = hrself.min = mindef __str__(self):return '%d:%d' % (self.hr, self.min)__repr__ = __str__def __add__(self, other):a = divmod(self.min + other.min, 60)return self.__class__(self.hr + other.hr + a[0], a[1])def __iadd__(self, other):a = divmod(self.min + other.min, 60)self.hr += self.hr + other.hrself.min += a[1]return selfa = Time60(10,30)
b = Time60(8,45)
print a+b