python while 循环

Question

 def merge(l1,l2):
 i=0;
 while((l1[i]!=none)||(l2[i]!=none)):

SyntaxError: 语法无效 作为新手，我无法弄清楚上面的代码有什么问题。

Answer 1

用或替换||，使None大写(去掉分号):

def merge(l1, l2):
  i = 0
  while l1[i] != None or l2[i] != None:
    pass

(如您所见，括号也是多余的。)

另外，!= None可以改成is not None:

while l1[i] is not None or l2[i] is not None:

_{(感谢@SilentGhost 指出这一点。)}