[Tutor] design of Point class

[bob gailer]

  On 8/20/2010 8:35 PM, bob gailer wrote:
> After yet more thought it gets even more better: I even added a unit test.
class PointND(list):
   def __init__(self, *a_list):
     super(PointND, self).__init__(a_list)

   def getSet(ix):
     def chklen(self):
       if len(self) < ix + 1:
         raise AttributeError
     def get(self):
       chklen(self)
       return self[ix]
     def set(self, value):
       chklen(self)
       self[ix] = value
     return property(get, set)

   def set(self, ix):
     return s

   x = getSet(0)
   y = getSet(1)
   z = getSet(2)

p = PointND(1,2,3)
assert (p.x, p.y, p.z) == (1, 2, 3)
p.x = 6; p.y = 9; p.z = 5
assert (p.x, p.y, p.z) == (6, 9, 5)

try:
   p = PointND(1,2)
   p.z = 3
except AttributeError:
   print 'Passed all tests'
except:
   print 'some other exception'



-- 
Bob Gailer
919-636-4239
Chapel Hill NC