python3基础3
# 匿名函数: bbb = lambda a, b: a + b print(bbb(1,1)) # 函数 def add(a=None, b=None): """ 接收两个整型参数,实现加法运算。 用法: add(1, 2) """ print("run add...") if a is None: a = 2 if b is None: b = 1 c = a + b #print("result:", c) return c a = A().add() #初始化类的动作 cc = A.add(4, 8) print("cc", cc) # 类/方法 class MyClass: # 家 # 初始化方法 def __init__(self, a, b): # 爸爸 self.a = a # 钱 self.b = b # 钱 # 普通的方法 def sun(self): print("工作了..") self.money = 1000 def add(self): # 妈妈 self.sun() print("买东西", self.money) return self.a + self.b myclass = MyClass(2, 3) c = myclass.add() print("c-->", c) print("---------------------------------") global HELLO #全局 class A: dianchi = "电池" @classmethod def hello(): HELLO = "asdfasdf" print("hello",HELLO) A.hello() print("---------------------------------") class A(object): def __init__(self, a, b): self.a = a self.b = b def add(self): return self.a + self.b def car(self): print("装上"+ self.dianchi) print("跑了") class B(A): dianchi = "5号电池" def __init__(self, a, b , c): A.__init__(self, a, b) self.c = c class C(B): pass b = A(1, 2) b.car()
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