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A range function with float increment

Taken from Edvard Majakari's comment in this recipe.

def arange(start, stop=None, step=None):
    if stop is None:
        stop = float(start)
        start = 0.0
    if step is None:
        step = 1.0
    cur = float(start)
    while cur < stop:
        yield cur
        cur += step

For python 2.2 (e.g. pys60) you need to do a "from __future__ import generators" first.
To get the list from the generator, use list(arange(...))
to python float range arange by korakot on Feb 18, 2006
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