python - Python中两个列表的求和交集

Question

我是 Python 新手。如果我有一个像这样的“数据”变量:

data = [['water', 'chips', 'pie', 'fruit', 200], ['soda', 'nuts', 'cake', 'vegetables', 300], ['water', 'chips', 'cake', 'fruit', 40], ['soda', 'crackers', 'cake', 'vegetables', 80]]

我有一个这样的列表:

ls = [['water', 'chips'], ['soda', 'nuts']]

如何返回包含这两个值的 data[i][4] for i in data 的总和并将其附加到列表中。

total = 0
for i in data:
    for x in ls
        if i contains x:
             ls[2] = total += total

# should return
ls = [['water', 'chips', 240], ['soda', 'nuts', 300]]

ls 中的最后一个元素是包含 ls[1] 的那些 data[3][4] 的总和 和 ls[2]

Answer 1

res = [
    e +  # filter list itself
    [
        sum( # sum all
            l[4]  # get fourth item if contains all
            for l in data  # take each element of data
            if all(i in l for i in e)  # check if contains all filter list
        )
    ]  # concat sum to list itself
    for e in ls  # take each element of filter list 
]