python中 * 的用法详解

def T(msg,time=1):
  print((msg+' ')*time)

T（'hi',3）

> def demo(*p):
  print(p)

  
> demo(1,2,3)
(1, 2, 3)

> def d(a,b,c):
  print(a,b,c)

  
> d(1,2,3)
1 2 3


> a=[1,2,3]
> b=[1,2,3]
> c=[1,2,3]
> d(a,b,c)
[1, 2, 3] [1, 2, 3] [1, 2, 3]

  
> d(*a)
1 2 3

> def demo(**p):
  for i in p.items():
    print(i)

    
> demo(x=1,y=2)
('x', 1)
('y', 2)