函数可变参数

#/usr/bin/env python3


def fun(k,*args,**kwargs):
    print(k)
    print(args)
    print(kwargs)


fun(1,2,3,4,a=5,b=‘b‘)  #注意kwargs的key不带‘‘
# 1
# (2, 3, 4)
# {‘a‘: 5, ‘b‘: ‘b‘}


fun(1,*[2,3,4],**{‘a‘:5,‘b‘:‘b‘})
# 1
# (2, 3, 4)
# {‘a‘: 5, ‘b‘: ‘b‘}


##错误方式
fun(1,[2,3,4],{‘a‘:5,‘b‘:‘b‘})
# 1
# ([2, 3, 4], {‘a‘: 5, ‘b‘: ‘b‘})
# {}