> You can implement this in your own subclass of dict, no?
Yes, I just thought it would be convenient to have in the language
itself, but the responses to my post seem to indicate that [not
returning the updated object] is an intended language feature for
mutable types like dict or list.
class ReplaceableDict(dict):
def replace(self, **kw):
'Works for replacing string-based keys'
return dict(self.items() + kw.items())
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