Python中的类

我不是女神ヾ 2021-07-25 22:24 488阅读 0赞

**目录**

一、定义类、并使用类属性和方法

二、类继承

三、外部类引入

--------------------

# 一、定义类、并使用类属性和方法 #

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwMzIzMjU2_size_16_color_FFFFFF_t_70][]

class Person():
        def __init__(self, name):
            self.name = name
    
        def introduce(self):
            print("大家好!我叫：", self.name.title())
    
    lijiang = Person("li jiang")
    print(lijiang.name)
    lijiang.introduce()
    print("--------------------------")
    
    zhangsan = Person("zhangsan")
    print(zhangsan.name)
    zhangsan.introduce()

# 二、类继承 #

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwMzIzMjU2_size_16_color_FFFFFF_t_70 1][]

class Person():
        def __init__(self, name):
            self.name = name
    
        def sayHello(self):
            print("hello 大家好！")
    
        def introduce(self):
            print("大家好!我叫：", self.name.title())
    
    class SexPerson(Person):
        def __init__(self,name):
            super().__init__(name)
            self.sex="男"
        
        def introduce(self):
             print("大家好!我的性别是：", self.sex)
    
    lijiang = Person("lijiang")
    print(lijiang.name)
    lijiang.sayHello()
    lijiang.introduce()
    print("--------------------------")
    
    zhangsan = SexPerson("zhangsan")
    print(zhangsan.name)
    lijiang.sayHello()
    zhangsan.introduce()

# 三、外部类引入 #

选择类导入:from func import Person, SexPerson
    
    一次导入所有类：from func import *

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwMzIzMjU2_size_16_color_FFFFFF_t_70 2][]

**func.py**

**first.py**

# 导入类
    from func import Person, SexPerson
    
    # 一次导入所有类
    # from func import *
    
    lijiang = Person("lijiang")
    print(lijiang.name)
    lijiang.sayHello()
    lijiang.introduce()
    print("--------------------------")
    
    zhangsan = SexPerson("zhangsan")
    print(zhangsan.name)
    lijiang.sayHello()
    zhangsan.introduce()

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