1 def group(list,n):
 2     H = []
 3     s = len(list)/n
 4     if len(list)%n ==0:
 5         for i in range(s):
 6             li = list[i*n:(i+1)*n]
 7             H.append(li)
 8     else:
 9         for i in range(s):
10             li = list[i*n:(i+1)*n]
11             H.append(li)
12         H.append(list[-s*n:])
13     return H

1 #使用zip合并相邻的项（好像只能是迭代对象iter）
2 
3 def group(lst, n):
4     num = len(lst) % n
5     zipped = zip(*[iter(lst)] * n)
6     if num == 0:
7         return zipped
8     else:
9         return zipped + [lst[-num:], ]