如何在Python列表列表中從字符串中生成數字列表

Question

我有一個這樣的清單：

[[['(0,1,2)','(3,4,5)'],['(5,6,7)','(9,4,2)']],[['(0,1,2)','(3,4,5)'],['(5,6,7)','(9,4,2)']]]

我想得到類似的東西：

[[[[0,1,2],[3,4,5]],[[5,6,7],[9,4,2]]],[[[0,1,2],[3,4,5]],[[5,6,7],[9,4,2]]]

我嘗試過字符串理解，re模塊，拆分，剝離，但是似乎都沒有用。 謝謝！

Answer 1

遞歸似乎很簡單：

l = [[['(0,1,2)','(3,4,5)'],['(5,6,7)','(9,4,2)']],[['(0,1,2)','(3,4,5)'],['(5,6,7)','(9,4,2)']]]

def convert(x):
    if isinstance(x, list):
        return [convert(y) for y in x]
    else:
        return [int(y) for y in x.strip('()').split(',')]

convert(l) # [[[[0, 1, 2], [3, 4, 5]], [[5, 6, 7], [9, 4, 2]]], [[[0, 1, 2], [3, 4, 5]], [[5, 6, 7], [9, 4, 2]]]]

Answer 2

如果您想查看嵌套列表推導中的外觀

startList = [[['(0,1,2)','(3,4,5)'],['(5,6,7)','(9,4,2)']],[['(0,1,2)','(3,4,5)'],['(5,6,7)','(9,4,2)']]]
new = [[[[int(x) for x in moreSub.strip("()").split(",")] for moreSub in subitem] for subitem in item] for item in startList]
print(new)