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from collections import namedtuple | |
from pympler.asizeof import asizeof | |
class PointSimple: | |
def __init__(self, x, y): | |
self.x = x | |
self.y = y | |
class PointNamedTuple(namedtuple('PointNamedTuple', ['x', 'y'])): | |
__slots__ = () | |
@property | |
def hypot(self): | |
return (self.x ** 2 + self.y ** 2) ** 0.5 | |
def __str__(self): | |
return f'Point: x={self.x} y={self.y} hypot={self.hypot}' | |
class PointNoSlots(namedtuple('PointNoSlots', ['x', 'y'])): | |
@property | |
def hypot(self): | |
return (self.x ** 2 + self.y ** 2) ** 0.5 | |
def __str__(self): | |
return f'Point: x={self.x} y={self.y} hypot={self.hypot}' | |
classes = PointSimple, PointNamedTuple, PointNoSlots | |
for cls in classes: | |
print(f'class = {cls.__name__}; real size = {asizeof(cls(1, 2))}') |
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tirinox commentedFeb 7, 2021