Subclassing a read-only class

[Gerhard Häring]

Hello,

For compatibility testing, I'd like to put an additional method into
window object I get from the curses module. Unfortunately, if I try to
do so, I get:

    TypeError: object has read-only attributes

I'm pretty sure there is a solution, probably with a proxy object. But
currently I just don't get it.

Any ideas?

Gerhard
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