python - 如何将字符串的元素放入具有特定行为的列表中

Question

list1 =  ['A', 'B']
list2 = [[(1, 1), (1, 2), (1, 3), (1, 4), (2, 1), (2, 2), (2, 3), (2, 4)]]

我需要我的输出:

[[(1, 1), (1, 2), (1, 3), (1, 4)],[(2, 1), (2, 2), (2, 3), (2, 4)]]

现在如果我知道:

• sublist1 的长度 = 4
• sublist2 的长度 = 4

那我怎么能把所有这些都放在字典里呢:

{'A':length of sublist1, 'B':length of sublist2}

Answer 1

使用拆分和分组:

>>> from itertools import groupby
>>> data = [map(int, (z for z in x.split(','))) for x in string1.split()]
>>> a, b = [list(j) for j in groupby(data, key=operator.itemgetter(0))]
>>> a
[[1, 1], [1, 2], [1, 3], [1, 4]]
>>> b
[[2, 1], [2, 2], [2, 3], [2, 4]]

然后你可以这样做:

>>> dict(zip(list1, (len(i) for i in (a,b))))
{'A': 4, 'B': 4}