Descriptor puzzlement

[John Roth]

Using Python 2.2.3, I create this script:

[beginning of script]

class AnObject(object):
    "This might be a descriptor, but so far it doesn't seem like it"
    def __init__(self, somedata):
        self.it = somedata
    def __get__(self, obj, type=None):
        print "in get method"
        return self.it
    def __set__(self, obj, it):
        print "in set method"
        self.somedata = it
        return None
##    def foo(self):
##        return 1

class AnotherObject(object):
    def __init__(self):
        self.prop = AnObject("snafu")

myClass = AnotherObject()
print myClass.prop
myClass.prop = "foobar"
print myClass.prop

[end of script]

Then I execute it:

C:\Documents and Settings\John\My Documents\Projects\AstroPy4>b

C:\Documents and Settings\John\My Documents\Projects\AstroPy4>python b.py
<__main__.AnObject object at 0x0086D248>
foobar

It doesn't look like the descriptor protocol is getting
invoked at all.

What's happening here?

John Roth