Web Reference: Jan 23, 2009 · What is the purpose of __slots__ in Python — especially with respect to when I would want to use it, and when not? Aug 12, 2023 · In this article we’ll look a why and how using slots make your classes that much faster and when to use them. The overall goal is to better understand how Python’s class internals work. The short answer is slots are more efficient in terms of memory space and speed of access, and a bit safer than the default Python method of data access. By default, when Python creates a new instance of a class, it creates a __dict__ attribute for the class.
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