Why 256 is 256, but 512 is not 512 in Python
In Python, two variables equal to 256 share the same object, but two variables equal to 512 don't. The reason is Python's object model. In this video, we cover identity, type, and value; how assignment and name binding actually work; the small-integer cache; and why mutating a list changes both aliases while reassigning a string doesn't.
00:00 Introduction
01:11 Object Model
01:36 Object Creation and Variable Assignment
02:04 Value and Identity Comparison
02:31 Object Creation Optimizations
02:47 Simple Mental Model
03:01 Name Binding
03:22 Mutating Objects
05:23 Recap
Watch Python Before Production
1. Why 256 is 256, but 512 is not 512 in Python — • Why 256 is 256, but 512 is not 512 in Python
2. Scalar Data Types of Python — • Python Scalar Data Types: None, bool, int,...
3. Sequence and Set Types of Python — • Python list vs tuple vs set vs frozenset
4. Python's New frozendict Built-in and Mapping Types — • Python 3.15's New frozendict vs dict
Python Before Production — • Python Before Production
Pip Install Series — • Pip Install Series
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