“x”是这个函数的一个无效的关键字参数。

I'm trying to write something that checks if an integer (z) is within the bounds of x and y, x being the minimum number, y being the maximum. I do this by checking if z is less than the minimum number or more than the maximum number. If either of those are true it returns invalid, else it confirms it. The maximum, minimum and number to check values are determined by raw_input. Here's the code:I'm trying to write something that checks if an