python 字典。一定范围内的键，值是键的平方

Question

不知道错在哪里

Answer 1

用字典推导式，一行就可以：

>>> {i:i**2 for i in range(2,7)}
{2: 4, 3: 9, 4: 16, 5: 25, 6: 36}

写成函数：

def dic_square_keys(m,n):
    return {i:i**2 for i in range(m,n+1)}

>>> dic_square_keys(2,6)
{2: 4, 3: 9, 4: 16, 5: 25, 6: 36}
>>>