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