[Tutor] turning a number into a formated string
Tim Peters
tim.peters at gmail.com
Wed Dec 15 21:15:27 CET 2004
[Ertl, John]
> I need to take a number and turn it into a formatted string.
> The final output needs to look like XXXXYYYY when the X is the
> integer part padded on the left and Y is the decimal part padded
> on the right.
> I figured I could split the number at "." and then use zfill or
> something like this (LEVEL1 = "%04d" % LEVEL1) for the XXXX
> part but I am not sure how to right pad the decimal part of the
> number.
> Example.
> 1 and 1.0 needs to look like 00010000 ( I figured I would have to
> check the length of the list made from the split to see if a decimal
> portion existed)
> 1.1 needs to look like 00011000
> 22.33 needs to look like 00223330
Really? The input has two digits 3, but the output has three digits
3. I'll assume you meant 00223300 instead.
> 4444.22 needs to look like 44442200
> Any ideas on the right padding the decimal side using "0"
I expect that a "%09.4f" format does everything you asked for, except
that it contains a period. So let's try to repair that:
>>> def johnpad(n):
... return ("%09.4f" % n).replace('.', '')
Then:
>>> johnpad(1)
'00010000'
>>> johnpad(1.0)
'00010000'
>>> johnpad(1.1)
'00011000'
>>> johnpad(22.33)
'00223300'
>>> johnpad(4444.22)
'44442200'
>>>
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