Python面向对象基础详解编程语言

1. class

 
class Person: 
    '人的基类' 
    perCount=0 
 
    def __init__(self, name, gender, age): 
        self.name=name 
        self.gender=gender 
        self.age=age 
 
        Person.perCount +=1 
 
    def displayCount(self): 
        print("Totoal Employee %d",Person.perCount) 
 
 
    def displayEmployee(self): 
        print("Name: ", self.name, ", age: ", self.age) 
 
#Python内置类属性 
print("Person.__doc__:" , Person.__doc__)#类的文档字符串 
print("Person._name_:", Person.__name__)#类名 
print("Person.__module__:",Person.__module__)#类定义所在的模块（类的全名是'__main__.className'，如果类位于一个导入模块mymod中，那么className.__module__ 等于 mymod） 
print("Person.__bases__", Person.__bases__)#类的所有父类构成元素（包含了一个由所有父类组成的元组） 
print("Person.__dict__:", Person.__dict__)# 类的属性（包含一个字典，由类的数据属性组成） 
 
emp1=Person("Zara","female",18) 
emp2=Person("Mi","male",18) 
 
emp1.displayEmployee()

/Users/xxx/PycharmProjects/xxx/venv/bin/python /Users/xxx/PycharmProjects/xxx/ceshi.py 
Person.__doc__: 人的基类 
Person._name_: Person 
Person.__module__: __main__ 
Person.__bases__ (<class 'object'>,) 
Person.__dict__: {'__module__': '__main__', '__doc__': '人的基类', 'perCount': 0, '__init__': <function Person.__init__ at 0x108bcce18>, 'displayCount': <function Person.displayCount at 0x108bccd08>, 'displayEmployee': <function Person.displayEmployee at 0x108bccea0>, '__dict__': <attribute '__dict__' of 'Person' objects>, '__weakref__': <attribute '__weakref__' of 'Person' objects>} 
Name:  Zara , age:  18 
 
Process finished with exit code 0

self表示类的实例，非类本身。

2. inherit

class Person: 
    '人的基类' 
    def __init__(self, name, gender, age): 
        self.name=name 
        self.gender=gender 
        self.age=age 
    def modifyAttri(self,attri): 
        self.attri=attri 
        print("Attri: ",self.attri) 
 
class Female(Person): 
    '女性类' 
    def __init__(self,hobby): 
        self.hobby=hobby 
        print("hobby: ",self.hobby) 
 
    def getFamilyInfo(self): 
        print("Ten members in hers family.") 
 
c=Female("swimming")#实例化一个对象 
c.getFamilyInfo()#调用子类方法 
c.modifyAttri("SWIMING")#调用父类方法

hobby:  swimming 
Ten members in hers family. 
Attri:  SWIMING 
 
Process finished with exit code 0

下面看下子类调用父类构造方法：

3. override