How can I make a dictionary that marks itself when it's modified?

sandravandale at sandravandale at
Thu Jan 12 18:02:47 CET 2006

It's important that I can read the contents of the dict without
flagging it as modified, but I want it to set the flag the moment I add
a new element or alter an existing one (the values in the dict are
mutable), this is what makes it difficult. Because the values are
mutable I don't think you can tell the difference between a read and a
write without making some sort of wrapper around them.

Still, I'd love to hear how you guys would do it.


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