zhihu上回答一个问题

foo.py

test_data = "1,2,3-7,9,13,15-19"


def foo(some_array_string: str) -> list:
    res = []
    items = some_array_string.split(',')
    for item in items:
        try:
            number = int(item)
            res.append(number)
        except ValueError:
            start, end = item.split('-')
            res += list(range(int(start), int(end)+1)) # here
    return res


if __name__ == '__main__':
    res = foo(test_data)
    print(res)

[here] 的地方因为没有+1导致右边界错误