if __name__ == "__main__":
    # lambda函数中的变量如果被赋值了是可以动态修改的，只要在每次调用之前修改，就能实现变化
    x = 1
    a = lambda y: x + y
    print(a(10))
    x = x + 9
    print(a(10))

    x = x + 10
    print(a(10))


    # 如果你希望和正常函数一样在定义的时候绑死变量的值，那么你需要这样做
    b = lambda y, t=x: t + y
    print(b(10))
    x = x-1
    print(b(10))

    # 比如有个比较聪明的函数
    func = [lambda x : x + n for n in range(5)]
    for f in func:
        print(f(0))

    func2 = [lambda x, n=n: x + n for n in range(5)]
    for f in func2:
        print(f(0))