Why Does Python Treat True, 1, and 1.0 as the Same Set Element?
This article explains the surprising behavior of Python sets when mixing True, integers, floats, and how the distinction between the is operator and the == operator determines element uniqueness, while also reviewing Python's basic immutable and mutable data types.
1. Introduction
Recently a fan named Chloe asked a question about Python sets in a chat group, which prompted this article to explain the surprising behavior of set elements.
The output shown in the following screenshots may look unexpected at first glance.
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