[Edu-sig] Uniform Access Principle confusion

[Arthur]

> -----Original Message-----
> From: Kirby Urner [mailto:urnerk at qwest.net]
> 
>  >>> class Angle (object):
> 
> 	def __init__(self, thevalue):
> 		self.value = float(thevalue)
> 
> 	@property
> 	def degrees(self):
> 		return self.value
> 
> 	@property
> 	def radians(self):
> 		return math.radians(self.value)
> 
>  >>> class Triangle (object):
> 
> 	def __init__(self, A=30, B=60, C=90):
> 		self.A = Angle(A)
> 		self.B = Angle(B)
> 		self.C = Angle(C)

Works for me.

And I think pedagogically valuable as an approach.

For an (embarrassingly) long time I had complicated my class hierarchies by
not seeing the simple possibilities of creating classes to act as attributes
of more far-reaching classes.

Its simple and obvious -  once it's simple and obvious.

Downsides, warnings?

Art