python - 整数查找器问题

Question

我正在尝试使用此代码创建一个函数来查找您想要的数字：

def get(x):
    y=1
    while (x/y != 1):
        y= y+1
    return y

但它一直给我答案的一半 + 1。就像，如果我输入 6，它给我 4，如果我输入 500，它给我 251。

Answer 1

Your problem is that it is doing integer division. So, 6/4 evaluates to 1. (In python3, true division would kick in and I think your test would work)

The best way to fix this would be to do something like:

while x != y:
    ...

And of course, these tests should really only be done using integers...once you pass a floating point number in, it's hard to say what will happen.

Answer 2

我认为这就是您要寻找的-

 def get(x):
     y=1.0
     while (x/y != 1):
             print y, x
             y= y+1
     return y

试试下面的函数调用 -

>>> get(5.0)

1 和 1.0 可以解决问题。查看 python 文档以获得更多理解！