$*arg,*args$

*arg表示可变长参数，作为形参时，如下

def function(*args,**kargs):
	for i in args:
		print(i)
	for i in kargs:
		print(i,":",kargs[i])
function(4,5,6,a=1,b=2)

4 5 6 a:1 b:2

numpy索引语法糖

[...]和[:]的效果一样