您犯了一个错误-必须确保平方根是整数并且大于或等于 x ,但不完全是 十 (见以下评论):

if x > 1 and y > x:
    num_of_programs = [None] * (y + 1)

    for i in range(x):
        num_of_programs[i] = 0

    num_of_programs[x] = 1

    for i in range(x + 1, y + 1):
        num_of_programs[i] = 0
        if i % 2 == 0 and i // 2 >= x:
            num_of_programs[i] += num_of_programs[i // 2]
        if i % 3 == 0 and i // 3 >= x:
            num_of_programs[i] += num_of_programs[i // 3]
        if i - 5 >= x:
            num_of_programs[i] += num_of_programs[i - 5]
        if i - 7 >= x:
            num_of_programs[i] += num_of_programs[i - 7]
        # fix here!
        if i ** (1/2) - int(i ** (1/2)) == 0 and i ** (1/2) >= x:
            num_of_programs[i] += num_of_programs[int(i ** (1/2))]

    print(num_of_programs[y])

你听起来像是对python不熟悉,而对其他语言比较熟悉的人。我也是,也有一些问题。请改为使用以下代码:

some_variable = print('some value here')
print(some_variable)
print(type(some_variable))

它在python中对“None”类型有帮助