Fred L. Drake, Jr. writes:
[describing a suggested property syntax]
> class Foo(object):
> property myprop:
> """A computed property on Foo objects."""
>
> def __get__(self):
> return ...
Perhaps it was obvious to everyone else, but it just occured to me
that this lends itself to inheriting descriptor types:
class ReadOnly(object):
def __get__(self):
raise NotImplementedError("sub-class must override this!")
def __set__(self):
raise AttributeError("read-only attribute")
def __delete__(self):
raise AttributeError("read-only attribute")
class Foo(object):
property myprop(ReadOnly):
def __get__(self):
return ...
-Fred
--
Fred L. Drake, Jr. <fdrake at acm.org>
PythonLabs at Zope Corporation
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