python3 面向对象、类、继承、组合、派生、接口、子类重用父类方法

class teacher: lesson = "python" def __init__(self,name,color,age): # 只干初始化的活
self.name = name
if not isinstance(name,str):
raise TypeError
self.color = color
self.age = age def jineng(self):
print('新技能')t1 = teacher('as','pink',13) # t1可以成为teacher类的一个实例，或对象

class teacher:
# 特征
school = 'oldboy'
lesson_default = 'python' # 技能
def __init__(self,name,age,sex,lesson2):
self.name = name
self.age = age
self.sex = sex
self.lesson2 = lesson2
def speak(self):
print('讲课')
def eat(self):
print('吃饭')t1 = teacher('alex','','男','运维')
t2 = teacher('egon','','男','运维')

class People:
def __init__(self,name,age,sex):
self.name = name
self.age = age
self.sex = sex
def walk(self):
print('%s is walking' %self.name)
def foo(self):
print('from father %s' %self.name)class Teacher(People):
school = 'oldboy'
def __init__(self,name,age,sex,level,salary):
People.__init__(self,name,age,sex)
self.level = level
self.salary = salary
def bar(self):
People.foo(self)
print('from teacher')class Student(People):
passt = Teacher('egon',13,'male',10,3000)
# print(t.name,t.age)
print(t.__dict__)
t.walk()
t.bar()

class People:
def __init__(self, name, age, year, mon, day):
self.name = name
self.age = age
self.birth = Date(year, mon, day) # 组合 def walk(self):
print('%s is walking' % self.name)class Date:
def __init__(self, year, mon, day):
self.year = year
self.mon = mon
self.day = day def tell_birth(self):
print('出生于<%s>年 <%s>月 <%s>日' % (self.year, self.mon, self.day))class Teacher(People):
def __init__(self, name, age, year, mon, day, level, salary):
People.__init__(self, name, age, year, mon, day)
self.level = level
self.salary = salary def teach(self):
print('%s is teaching' % self.name)class Student(People):
def __init__(self, name, age, year, mon, day, group):
People.__init__(self, name, age, year, mon, day)
self.group = group def study(self):
print('%s is studying' % self.name)t = Teacher('egon', 12, 1991, 12, 12, 10, 1000)
t.teach()
t.walk()
print(t.level)
print(t.birth.tell_birth())

class File:#定义接口Interface类来模仿接口的概念，python中压根就没有interface关键字来定义一个接口。
def read(self): #定接口函数read
pass def write(self): #定义接口函数write
passclass Txt(File): #文本，具体实现read和write
def du(self):
print('文本数据的读取方法') def xie(self):
print('文本数据的读取方法')class Sata(File): #磁盘，具体实现read和write
def read(self):
print('硬盘数据的读取方法') def write(self):
print('硬盘数据的读取方法')class Process(File):
def read(self):
print('进程数据的读取方法') def write(self):
print('进程数据的读取方法')txt=Txt()
disk=Sata()
process=Process()txt.du()
# disk.read()
# process.read()

import abcclass File(metaclass=abc.ABCMeta):
@abc.abstractmethod
def read(self):
pass @abc.abstractmethod
def write(self):
passclass Txt(File): # 文本，具体实现read和write
def read(self):
pass def write(self):
passt = Txt()