python基础语法

* 号使用
1.作为实参：解构实体参数，使匹配形参

def fun(a,b,c):
    print(a,b,c)
    
a = [1,2,3]
fun(*a)
#输出：1 2 3

a = [1,2]
print(*a)
a = [[1,2]]
print(*a)
#输出 
1 2
[1, 2]

2.作为行参：组装实体参数成字典

def fun(**p):
    for i in p.items():
        print(i)
        
fun(x=1,y=2)
#输出 
('x', 1)
('y', 2)

zip函数

a = [1,2]
b = [3,4]
z = zip(a,b)
print(list(z))
#输出 [(1, 3), (2, 4)]