Looping using iterators with fractional values

[Steven Bethard]

Mark McEahern wrote:
> drife wrote:
> 
>> Hello,
>>
>> Making the transition from Perl to Python, and have a
>> question about constructing a loop that uses an iterator
>> of type float. How does one do this in Python?
>>  
>>
> Use a generator:
> 
>  >>> def iterfloat(start, stop, inc):
> ...     f = start
> ...     while f <= stop:
> ...             yield f
> ...             f += inc
> ...
>  >>> for x in iterfloat(0.25, 2.25, 0.25):
> ...     print '%9.2f' % x
> ...
>    0.25
>    0.50
>    0.75
>    1.00
>    1.25
>    1.50
>    1.75
>    2.00
>    2.25
>  >>>
> 

Or use the numarray module:

py> import numarray as na
py> for f in na.arange(0.25, 2.25, 0.25):
...     print '%9.2f' % f
...
      0.25
      0.50
      0.75
      1.00
      1.25
      1.50
      1.75
      2.00

Steve