Python根据列表中整数的位数合并成字典

Posted 2022-07-15 Channing Lewis

from collections import defaultdict

num_list = [1, 2, 5, 23, 77, 344, 2222, 6666, 4567, 9]

ans_dict = defaultdict(list)
for num in num_list:
    key_len = len(str(num))
    ans_dict[key_len].append(num)

print(dict(ans_dict))

输出：

1: [1, 2, 5, 9], 2: [23, 77], 3: [344], 4: [2222, 6666, 4567]