Python Dicts vs NamedTuples

Cluster debates advantages of namedtuples, dataclasses, and classes over dictionaries in Python for lightweight, immutable data structures, focusing on syntax, performance, type safety, and use cases.

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Keywords

e.g JS python.org FTW kentsjohnson.com UserDict DictMixin MyDataclass a.y KeyValue dictionaries python key key value self nested named immutable classes value

Sample Comments

erokar • Dec 7, 2016 • View on HN

Besides immutability, what are the advantages of using namedtuples instead of dicts?

_ZeD_ • May 8, 2015 • View on HN

why not use namedtuples (or plain tuples) instead of dictionaries?

S4M • Oct 31, 2015 • View on HN

Named tuples are fine, but what do they have over using classes or dictionaries?

lucian1900 • Nov 24, 2011 • View on HN

Yuck. Sorry, but this is worse than dicts or namedtuples in every way.

tomrod • Sep 1, 2017 • View on HN

Dumb question from a non-developer: wouldn't using a dict object make more sense if someone wanted an unordered named tuple?

miohtama • Nov 28, 2014 • View on HN

It lacks the same syntatic sugar as Python dicts :(

pekk • Oct 25, 2013 • View on HN

What is the advantage of this over using dictionaries?

bpicolo • Aug 1, 2015 • View on HN

Switch to namedtuples for lightweight data structures. No regrets.

guidopallemans • Dec 11, 2025 • View on HN

When you are making str -> Any dictionaries it's quite likely you're better off with dataclasses or namedtuples anyway.

hbrn • Jan 27, 2023 • View on HN

Can you elaborate? What exactly is wrong with dicts?