Comments on: Inclusive range() in Python

By: Jon

Jon — Fri, 19 Jun 2009 19:16:25 +0000

I think Chris’s definition is not quite right. Consider these calls:

range(1, 5, 3) => [1, 4] inclusive_range(1, 5, 3) => [1, 4, 7]

The inclusive range shouldn’t include 7, since it is strictly greater than 5.

I think this is one way to define the interface with the same semantics as the range() built-in other than changing the right bound to be inclusive:

def inclusive_range(*args): if len(args) == 1: start = 0 stop = args[0] step = 1 elif len(args) == 2: (start, stop) = args step = 1 elif len(args) == 3: (start, stop, step) = args else: raise TypeError("Expected 1-3 args, got", len(args)) if step > 0: return range(start, stop + 1, step) else: return range(start, stop - 1, step)

By: Kenny Katzgrau

Kenny Katzgrau — Sat, 16 Aug 2008 14:17:18 +0000

@ Comments 1 & 2:

Lol. That’s great — been there.

By: Wes Turner

Wes Turner — Thu, 05 Jun 2008 04:54:16 +0000

irange = lambda x,y,z=1: range(x,y+1,z)

By: Chris Brinker

Chris Brinker — Tue, 22 Apr 2008 20:21:26 +0000

Dern lack of preview :)
def inclusive_range(start, stop, step=1): return(range(start, stop+step, step))

By: Chris Brinker

Chris Brinker — Tue, 22 Apr 2008 20:20:29 +0000

You may want to consider a situation with a negative step as well, in which case it is just better to add the step (positive or negative) to the stop:

def inclusive_range(start, stop, step=1):
return(range(start, stop+step, step))

-Chris

By: Giuliani Vito, Ivan

Giuliani Vito, Ivan — Thu, 06 Mar 2008 22:41:51 +0000

goddamn… this is what happens when coding 8 hours straight on…

By: Xubuntix

Xubuntix — Thu, 06 Mar 2008 22:10:58 +0000

How fast is:
def inclusive_range(start, stop, step=1):
return(range(start, stop+1, step))