I've been playing with descriptors lately. I'm having one problem I
can't seem to find the answer to. I want to assign a descriptor to a
list of attributes. I know I should be able to add these somewhere in
the class's __dict__, but I can't figure out where. Here's some code:
class MyDesc(object):
def __init__(self, name=None, initVal=None):
self.name = name
self.value = initVal
def __get__(self, obj, objtype):
// Do some stuff
self.value = "blah"
return self.value
class MyClass(object):
attributes = ('attr1', 'attr2')
for attr in attributes:
exec ("%s=MyDesc('%s')") % (attr, attr)
// More stuff in the class
Ok, that "exec" is an ugly hack. There's gotta be someway to plop
this straight into the class's __dict__ without doing that, but when I
try adding self.__class__.__dict__[attr] = MyDesc(attr) in MyClass's
__init__ method, I get the error: "TypeError: 'dictproxy' object does
not support item assignment"
Any ideas?
Thanks,
Bob
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