例１：
＃定义一个含有不定长参数的函数，本例第三个参数*args
def sum_nums(a,b,*args):
print('_'*30)
print(a)
print(b)
print(args)
＃调用函数：
sum_nums(11,22,33,44,55,66,77)
sum_nums(11,22,33)
sum_nums(11,22)
sum_nums(11)#错误调用，传递的参数不够
＃输出结果：
______________________________
11
22
(33, 44, 55, 66, 77)
______________________________
11
22
(33,)
______________________________
11
22
()
Traceback (most recent call last):
File "6.py", line 10, in <module>
sum_nums(11)#错误调用
TypeError: sum_nums() missing 1 required positional argument: 'b'
例２：
＃定义一个含有复杂参数类型的函数，**kwargs为关键字参数
def test(a,b,c=33,*args,**kwargs):
print(a)
print(b)
print(c)
print(args)
print(kwargs)
＃函数调用
test(11,22,33,44,55,task=99,done=89)
＃输出结果：
11
22
33
(44, 55)
{'task': 99, 'done': 89}
例３：拆包
＃定义函数
def test(a,b,c=33,*args,**kwargs):
print(a)
print(b)
print(c)
print(args)
print(kwargs)
A=(11,22,33)
B={
'task':99,'done':89
}
＃函数调用，将Ａ拆开后传给ａｒｇｓ，将Ｂ拆开后传给ｋｗａｒｇｓ
test(11,22,33,*A,**B)
＃输出结果
11
22
33
(11, 22, 33)
{'task': 99, 'done': 89}
转载于:https://www.cnblogs.com/littlesuns/p/9955068.html
