unsigned integer?

[hg]

Dan Bishop wrote:

> On Mar 10, 11:32 am, "Jack" <nos... at invalid.com> wrote:
>> This is a naive question:
>>
>> "%u" % -3
>>
>> I expect it to print 3. But it still print -3.
>>
>> Also, if I have an int, I can convert it to unsigned int in C:
>>    int i = -3;
>>    int ui = (unsigned int)i;
>>
>> Is there a way to do this in Python?
> 
> def unsigned(n):
>     return n & 0xFFFFFFFF


or abs(-1) ?