Boost Python Speed: 1 Memory Trick

Quick Tip: Use slots to reduce Python class memory usage

When creating classes in Python, you can significantly reduce memory usage by using the __slots__ attribute. Unlike regular classes, which store instance attributes in a dictionary (__dict__), __slots__ stores them in a tuple, resulting in less memory consumption.

Here's a minimal example:

python
import sys

class RegularClass:
    def __init__(self, x, y):
        self.x = x
        self.y = y

class SlottedClass:
    __slots__ = ('x', 'y')
    def __init__(self, x, y):
        self.x = x
        self.y = y

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