Python基础学习代码之面向对象编程

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