Using %x to format number to hex and number of digits

[Tim Chase]

On 11/05/10 15:10, Grant Edwards wrote:
> On 2010-11-05, Tim Chase<python.list at tim.thechases.com>  wrote:
>> On 11/05/10 13:23, Matty Sarro wrote:
>>>> I need it to output as 0x0a, and the exercise is requiring
>>>> me to use %x to format the string. Any help would be
>>>> appreciated.
>>
>> Though it feels hokey to me, using
>>
>>     "%#04x" % 10
>>
>> works for me.
>
> I think "0x%02x" % 10 is a bit more readable, but it accomplishes the
> same thing -- you just don't have to do the mental math to add the
> prefix width to the number of desired hex digits in the output.

Which, I confess, is what I usually use because I didn't know 
about the "#" until this thread, and just made the assumption 
that one can get the zero-padding along with the "alternate form" 
in my experimentation this afternoon.

So while it _can_ be done with just variants of the "%x" 
place-holder (as suggested by the OP's exercise), at least two of 
us on the list prefer to explicitly add the "0x" to the beginning.

-tkc