不定长参数的传递

Posted 2020-08-26 忍冬的你

 1 def Result(a,*b):
 2     result=0
 3     result+=a
 4     for x in b:
 5         result+=x
 6     return result
 7 
 8 add_result=Result(1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39)
 9 # add_result=Result(2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38)
10 print(add_result)

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除此之外，在python的函数中我们传递的参数有些还有特殊的含义，比如def test（a,b,c=8,count=\'china\'）

1 # test2()
2 
3 def Result(a,*b,**c):
4    print(a)
5    print(b)
6    print(c)
7 
8 Result(1,3,5,7,11,13,15,17,19,21,23,25,27,31,33,35,37,f=29,t=9,g=39)

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运行结果：

E:\\Python35\\python.exe F:/Exercise/Python/test0731/登陆.py
1
(3, 5, 7, 11, 13, 15, 17, 19, 21, 23, 25, 27, 31, 33, 35, 37)
{\'t\': 9, \'f\': 29, \'g\': 39}

Process finished with exit code 0

 

 

备注：* 和**参数都是可传可不传递的，因此必须把必须要传的放在第一位，这个一定要切记。