从python中的列表列表中删除外部列表

Question

I have a requirement in which I want to pass a set of lists separated by comma to a function.

searchTerms = ["a", "c", "d"]

stringList = ['a', 'b', 'c', 'd', 'a']

d = dict()

for j in range(len(searchTerms)):

    for i in range(len(stringList)):

        if searchTerms[j] == stringList[i]:

            d.setdefault(j, []).append(i)

print d.values()

if you run the above code the output will be [[0, 4], [2], [3]] but i need to pass [0, 4], [2], [3] to a function. Could anyone tell me how can I remove the outer list from here.

In short convert [[0, 4], [2], [3]] ------> [0, 4], [2], [3] . Thanks

I want to send it to this function:

 for element in itertools.product([0, 4], [2], [3]):

    sortedList = sorted(list(element))

Answer 1

Like this:

*[[0, 4], [2], [3]]

Hope it helps!

---

Example:

>>> def f(a, b, c):
...    print(a, b, c)
...
>>> f(*[1, 2, 3])
1 2 3

In your case:

for element in itertools.product(*d.values()):
    sortedList = sorted(list(element))