Dynamic Zero Padding.

Tue Jun 7 18:04:35 EDT 2011

Friedrich Clausen wrote:
> Hello All,
>> I want to print some integers in a zero padded fashion, eg. :
>>>>> print("Testing %04i" % 1)
> Testing 0001
>> but the padding needs to be dynamic eg. sometimes %05i, %02i or some
> other padding amount. But I can't insert a variable into the format
> specification to achieve the desirable padding.
>> I would be much obliged if someone can give me some tips on how to
> achieve a variably pad a number.

--> width = 3
--> print("Testing %0*i" % (width, 1))
Testing 001
--> width = 7
--> print("Testing %0*i" % (width, 1))
Testing 0000001
The '*' acts as a place holder for the width argument.
~Ethan~