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    <p><strong>Edit:</strong> I've modified the code with my answer a bit more from @unutbu's original to simplify it and make what is being done clearer. In the latest version, the <code>@staticmethod</code>'s have been eliminated altogether and replaced with nested one-liners. The outer function and nested class have been renamed <code>AutoFloatProperties</code> and <code>_AutoFloatProperties</code> to reflect their specialized behavior of converting and storing the values assigned as floats. Despite all this, @unutbu's own revised answer using a class decorator instead of a metaclass is a slightly simpler solution, although the internals and usage are very similar.</p> <pre><code>def AutoFloatProperties(*props): '''metaclass''' class _AutoFloatProperties(type): # Inspired by autoprop (http://www.python.org/download/releases/2.2.3/descrintro/#metaclass_examples) def __init__(cls, name, bases, cdict): super(_AutoFloatProperties, cls).__init__(name, bases, cdict) for attr in props: def fget(self, _attr='_'+attr): return getattr(self, _attr) def fset(self, value, _attr='_'+attr): setattr(self, _attr, float(value)) setattr(cls, attr, property(fget, fset)) return _AutoFloatProperties class Vector(object): '''Creates a Maya vector/triple, having x, y and z coordinates as float values''' __metaclass__ = AutoFloatProperties('x','y','z') def __init__(self, x=0, y=0, z=0): self.x, self.y, self.z = x, y, z # values converted to float via properties if __name__=='__main__': v=Vector(1,2,3) print(v.x) # 1.0 v.x=4 print(v.x) # 4.0 </code></pre>
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    1. COThis is by far the cleanest solution I've seen! Thanks for the wonderful example and also citing your sources.
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    2. COI think @unutbu's latest edit of his original answer which uses a class decorator instead of a metaclass might be a bit simpler. Actually, after re-reading the question, I wonder what exactly the OP meant by "it would be ideal if this class returned a tuple with all 3 coordinates". I don't think any answer here so far returns a tuple. Perhaps he'd like a method that returned one with the three values in it, or the special method `__call__` could be defined to return one. Another possibility would be to give the class an `__iter__` method so tuple() could be called on instances...
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    3. COI like the changes you've made to `AutoFloatProperties`. That really is much simpler!
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