使用引用列表元素的多个循环

Question

我对我所面临的错误做了一个小样本。我实际上需要代码做的是让每个钥匙选择两个任务并将其与钥匙一起打印。当我一开始运行代码时，它似乎可以正常工作，然后就不行了。谁能帮忙。这是输出和代码示例

实际输出

1 + 1 head
1 + 1 head
2 + 2 head
1 + 1 head
2 + 2 leg
1 + 1 head
2 + 2 nose
1 + 1 head
2 + 2 tail
1 + 1 head
list index out of range
pop from empty list
list index out of range
list index out of range
list index out of range
list index out of range
list index out of range
list index out of range

预期输出

1 + 1 head
2 + 2 head
3 + 3 leg
4 + 4 leg
5 + 5 nose
6 + 6 nose
7 + 7 tail
8 + 8 tail

代码

from concurrent.futures import ThreadPoolExecutor, as_completed
keys = ['head','leg','nose','tail']
quest = ['1 + 1','2 + 2','3 + 3','4 + 4','5 + 5','6 + 6','7 + 7' , '8 + 8']
count = []
def solve(i):
    try:
       for h in quest():
         if len(count) != 2:
            q = keys[0]
            print(i,q)
            count.append(q.strip())
    except Exception as e:
       print(e)
t = 2
def run():
    thread = []
    with ThreadPoolExecutor(max_workers=t) as exe:
        for i in quest:
          threads.append(exe.submit(solve,i))
run

Answer 1

>>> keys = ['head', 'leg', 'nose', 'tail']
>>> quest = ['1 + 1', '2 + 2', '3 + 3', '4 + 4', '5 + 5', '6 + 6', '7 + 7', '8 + 8']
>>> doubled_keys= sum([[*t] for t in zip(keys, keys)], [])
>>> pairs = [*zip(quest, doubled_keys)]
>>> for q, k in pairs:
...     print(q, k)
...
1 + 1 head
2 + 2 head
3 + 3 leg
4 + 4 leg
5 + 5 nose
6 + 6 nose
7 + 7 tail
8 + 8 tail