python - 如何简化 python 中的嵌套列表字典？

Question

我目前有这本带嵌套列表的字典:

dict_with_nested_list = {
    'B': [['a', 2], ['b', 4]],
    'A': [['a', 1], ['b', 3]]
}

correct_order = ['A', 'B']

我试图简化它，以便每个嵌套列表都按正确的顺序排列，并且它的元素是键及其对应的值:

desired_output = [
    ['a', 1, 2],
    ['b', 3, 4]
]

Answer 1

from collections import OrderedDict

ret = OrderedDict()
for order in correct_order:
    for key, value in dict_with_nested_list[order]:
        if key not in ret:
            ret[key] = []
        ret[key].append(value)

print [[key] + value for key, value in ret.items()]