[Tutor] Help on Python Looping Please

[Dave Angel]

On 01/-10/-28163 02:59 PM, pyhx0r wrote:
> Dear All,
>
>
> <snip>
>      multiple = 1024 if a_kilobyte_is_1024_bytes else 1000
>      for suffix in SUFFIXES[multiple]:
>          size /= multiple
>          if size<  multiple:
>              return '{0:.1f} {1}'.format(size, suffix)

>  <snip>
>
> I’ve shorted the code be:
>
>
>>>> SUFFIXES = {1000: ['KB','MB','GB'],
>
>                          1024: ['KiB','MiB','GiB']}

>>>> multiple = 1000

>>>> size = 2300
>>>> for suffix in SUFFIXES[multiple]:
>                  size /= multiple
>                  if size<  multiple:
>                                  '{0:.1f} {1}'.format(size, suffix)
>
> <snip>
>
>
> *Why do in my code, it loops to all values and not in Mark Pilgrim’s code?*
>

(Is there a reason you double-spaced all that code?  It makes it very 
hard to read, and quite difficult to quote, since I had to delete every 
other line.)

You wrote your code inline, and not as a function.  And you omitted the 
return statement.  So the loop won't return, it'll run to completion.

Another way to exit a loop early is to use the break statement.


DaveA