python學習筆記——類

# coding='utf-8'class User():    def __init__(self,name,sex):        self.name = name        self.sex = sex        print '這裡是建構函式'    def setName(self,name):        self.name = name    def getName(self):        return self.nameuser = User("python",'男')user.setName("ruby")print user.getName()print user.nameprint user.sex#===========列印結果===============#這裡是建構函式#ruby#ruby#男

ruby的類定義

require 'jcode'$KCODE='u'class User  attr_accessor :name,:sex  def initialize(name,sex)    @name = name    @sex = sex    p 'this is a constructor'  end    def get_name    @name  end    def set_name(name)    @name = name  endenduser = User.new('Ruby','11')user.set_name('rubyruby')p user.get_namep user.namep user.sex

javascript的類定義

      function User(name,sex){        this.name = name;        this.sex = sex;        alert("這裡是建構函式")      }      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 -*-# 這是一個簡單的類,用於輸出一個精確到小數點後兩位的浮點數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.valuerfm = RoundFloatManual(4.288)print rfm

# -*- coding:utf-8 -*-class Time60(object):    '用於小時與分鐘的加減法運算'    def __init__(self, hr=0, min=0):        self.hr = hr        self.min = min    def __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.hr        self.min += a[1]        return selfa = Time60(10,30)b = Time60(8,45)print a+b

# -*- coding:utf-8 -*-

class NumStr(object):
def __init(self, num=0, string=''):
self.__num = num
self.__string = string

def __str__(self):
return '[%d::%r]' % \
(self.__num, self.__string)
__repr__ = __str__

def __add__(self, other):
if(isinstance(other, NumStr)):
return self.__class__(self.__num + other.__num, self.__string + self.__string)
else:
raise TypeError, '類型錯誤'
def __mul__(self, num):
if(isinstance(num, int)):
return self.__class__(self.__num * num, self.__string * num)
else:
raise TypeError, '類型錯誤'
def __nonzero__(self):
return self.__num or len(self.__string)
def __norm_cval(self,cmpres):
return cmp(cmpres,0)
def __cmp__(self,other):
return self.__norm_cval(cmp(self.__num,other.__num))+\
self.__norm_cval(cmp(self.__string,other.__string))