[Tutor] A range of numbers

[Daniel Ehrenberg]

--- "R. Alan Monroe" <amonroe at columbus.rr.com> wrote:
> >> I was wondering if it is possible to set a
> variable or something to a
> >> RANGE of numbers. For instance , I want to have
> it so that when I
> >> mouse clicks in a certain region( let say, from
> (100,100) to
> >> (200,200)), it prints out "You Clicked!" . I'm
> doing this with
> >> Livewires right now. Of course, it would take
> forever if i try to write:
> >>
> >> if mouse_position() == (100,100) or (100,101) or
> (100,102)
> >> ..............................
> >> and mouse_buttons()['left'] == 1:
> >> do something
> 
> 
> >>>> y = 4
> >>>> y in range(5)
> > True # 1 in older Versions of Python
> >>>> y in range(5,10)
> > False # or 0
> 
> > so if you first extract the coordinates of
> > your mouse-position:
> >>>> x,y = mouse_position()
> > then you can easily check if y is in the desired
> > range.
> 
> I haven't tried it, but that seems like it would be
> slow, because
> Python would have to create a list, possibly
> hundreds of numbers long,
> in RAM, every time you checked it. Unless Python
> caches them?
> 
> The traditional way I think is to use greater than
> and less than.
> 
> if (x>100) and (x<200) and (y>100) and (y<200):
>    print "you clicked"
> 
> Alan

I think you could simplify that to

if 100<x<200 and 100<y<200:
    print "you clicked"

Daniel Ehrenberg

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