面向对象基础

class Student():

def init(self,name,age,sex,score):

self.name=name

self.age=age

self.sex=sex

self.score=score

zs=Student(‘张淑珍’,19,‘男’,98)

print(dir(zs))#dir 显示列表当中的属性

print(zs.name,zs.age,zs.sex,zs.score)

#---------------类属性和对象属性================

class Student():

address=‘朝阳区’

def init(self,name):

self.name=name

zs=Student(‘张三’)

print(zs.name,zs.address)

xm=Student(‘小明’)

print(xm.name,xm.address)

zs.address=‘海淀’

print(zs.name,zs.address)

# del zs.address

print(zs.name,zs.address)

delattr(zs,‘address’)

print(zs.name,zs.address)

#================================

class A():

def hehe(self):

print(self.name)

class B(A):

def init(self,name):

self.name=name

b=B(‘zs’)

b.hehe()

#===========================

class A():

def init(self,name):

self.name=name

def haha():

print(a.name,‘你好’)

a=A(‘张三’)

a.haha1=haha

a.haha1()

#===============================

class A():

money=10000

def init(self,name):

self.name=name

@classmethod

def clsm(cls):

print(cls.money)

A.clsm()

b=A(‘小红’)

b.clsm()

print(isinstance(b,A))

#单例模式

class A():

def new(cls, *args, **kwargs):

if not hasattr(A,‘xx’):

cls.xx=object.new(cls)

return cls.xx

def init(self,name):

self.name=name

a=A(‘hh’)

b=A(‘jj’)

print(a==b)

print(a is b)

print(a.name)

#创建目录
import os
js=input(‘请输入目录’)
b=js.split(’/’)
print(b)
p=os.getcwd()
for dg in b:
# p=p+’/’+dg
p=os.path.join(p,dg)
if not os.path.exists§:
os.mkdir(p,0o777)