出错数

import itertools

k = int(input("请输入整数："))

while k > 1:  # 单个
    num_set = [num for num in range(1, k+1)]
    arr_set = list(itertools.permutations(num_set, len(num_set)))
    # arr_set_1 = list(arr_set)    # 各种情况删除
    count = len(arr_set)
    for arr in arr_set:
        for i, num in enumerate(arr, 1):
            if num == i:
                count = count - 1
                # arr_set_1.remove(arr)  # 各种情况删除
                break

    print("--------排序数：{}--------".format(k))
    print("情况个数：", count)
    # print("各种情况", arr_set_1)
    k = k - 1  # 单个