Python 3 Deep Dive Part 4 Oop High Quality -

By default, Python instances store attributes in a __dict__ (dictionary). This is flexible but memory-heavy. __slots__ tells Python to use a fixed-size array.

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The code follows PEP 8 and uses clear naming conventions. python 3 deep dive part 4 oop high quality

class Order: quantity = PositiveNumber() price = PositiveNumber() By default, Python instances store attributes in a