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

Christian Tismer tismer at
Thu Jan 12 18:26:48 EST 2006

Just to add a word that I forgot:

Adhering to the subject line, the intent is to track modifications
of a dict.
By definition, modification of a member of a dict without replacing
the value is not considered a dict change.

I'd stick with the shallow approach.
Asking to track mutation of an element in the general case
is causing much trouble.
Support for element tracking can probably provided by overriding
the dict's getattr and recording the element in some extra
candidate list.
If the element itself is modified, it then could be looked up
as a member of that dict, given that the element's setattr
is traced, too.

ciao - chris

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