String 在python中将列表中的字符串元素转换为整数

我有一个名为newlist的列表

newlist=[['24,4,17,46,0,43'], ['11,43,17'], ['33,17,43,4'], ['74,21'],['21,43,43,74,68,21']]

我需要将每个列表元素转换为整数

newlist=[[24,4,17,46,0,43], [11,43,17], [33,17,43,4], [74,21], [21,43,43,74,68,21]].

有人能帮我吗。

Python 3:

newlist=[['24,4,17,46,0,43'], ['11,43,17'], ['33,17,43,4'], ['74,21'],['21,43,43,74,68,21']]
mylist = list(map(lambda x : list(map(int, x[0].split(','))) , newlist))
print(mylist)

Python 2：

newlist=[['24,4,17,46,0,43'], ['11,43,17'], ['33,17,43,4'], ['74,21'],['21,43,43,74,68,21']]
mylist = map(lambda x : map(int, x[0].split(',')) , newlist)
print mylist