Python基礎學習代碼之面向對象編程

class??AddrBookEntry(object):  ????'address?book?entry?class'  ????def?__init__(self,nm,ph):  ????????self.name?=?nm  ????????self.phone?=?ph  ????????print?'created?instance?for:',self.name  ????def?updatephone(self,newph):  ????????self.phone?=?newph  ????????print?'update?phone?for:',self.name  ????def?updatename(self,newname):  ????????self.name?=?newname  ????????print?'update?phone?for:',self.phone  john?=?AddrBookEntry('xiewenbin','13711710490')  print?john.name  print?john.phone  john.updatephone('18617311540')  john.updatename('xwb')  print?john.phone  print?john.name  class?EmpAddrBookEntry(AddrBookEntry):  ????'employee?address?book?entry?class'  ????def?__init__(self,nm,ph,id,em):  ????????AddrBookEntry.__init__(self,nm,ph)  ????????self.empid?=?id  ????????self.email?=?em  ????def?updateemail(self,newem):  ????????self.email?=?newem  ????????print?'update?email?address?for:',self.name  jone?=?EmpAddrBookEntry('jone?doe','408-555-1212',42,'543361609@qq.com')  print?jone.name  print?jone.phone  print?jone.email  jone.updatephone('18617311541')  print?jone.phone  jone.updateemail('186@qq.com')  print?jone.email  class?HotelRoomCalc(object):  ????'hotel?room?rate?calculator'  ????def?__init__(self,rt,sales=0.084,rm=0.1):  ????????'''hotelroot?calc??default?arguments:  ????????sales?tax?==?8.5%??and?room?tax?==?10%'''  ????????self.salestax?=?sales  ????????self.roomtax?=?rm  ????????self.rootrate?=?rt  ????def?cacltotal(self,days=1):  ????????'calculator?total;default?to?daily?rate'  ????????daily?=?round((self.rootrate?*?(1?+?self.roomtax?+?self.salestax)),2)  ????????return?float(days)?*?daily  sfo?=?HotelRoomCalc(299)  print?sfo.cacltotal(3)  class?TestStaticMethod(object):  ????@staticmethod  ????def?foo():  ????????print?'calling?static?method?foo()'  class?TestClassMethod(object):  ????@classmethod  ????def?foo(cls):  ????????print?'calling?class?method?foo()'  ????????print?'foo()?is?part?of?class:',cls.__name__  class?C(object):  ????foo?=?100  print?C.foo?+?1  class?Myclass(object):  ????'myclass?class?definition'  ????myversion?=?19.0  ????def?showmyversion(self):  ????????print?Myclass.myversion  mc?=?Myclass()  mc.showmyversion()  print?dir(Myclass)  print?Myclass.__dict__  """  class?InstCt(object):  ????count?=?0  ????def?__init__(self):  ????????InstCt.count?+=?1  ????def?__del__(self):  ????????InstCt.count?-=?1  ????def?howmany(self):  ????????return?InstCt.count  a?=?InstCt()  b?=?InstCt()"""  x?=?3?+?0.14j  print?x.__class__  print?[type(getattr(x,i))?for?i?in?('conjugate','imag','real')]  class?Foo(object):  ????x?=?{2003:'poe2'}  foo?=?Foo()  print?foo.x  foo.x[2004]?=?'xie'  print?foo.x  print?Foo.x  del?foo.x  print?foo.x  print?Foo.x