I want to rewrite Python’s dictionary access mechanism getitem to be able to return

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Editorial Team

Asked: May 19, 20262026-05-19T00:42:29+00:00 2026-05-19T00:42:29+00:00

I want to rewrite Python’s dictionary access mechanism “getitem” to be able to return default values.

The functionality I am looking for is something like

a = dict()
a.setdefault_value(None)
print a[100] #this would return none

any hints ?

Thanks

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Editorial Team · Answer 1 · 2026-05-19T00:42:29+00:00

Editorial Team

from collections import defaultdict

a = defaultdict(lambda:None)
print a[100]

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