mirror of
https://github.com/bikini/patchwork
synced 2026-06-27 08:08:41 +00:00
bikini
48 lines
1.1 KiB
Python
48 lines
1.1 KiB
Python
from collections import deque
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class Shape:
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def __init__(self, name: str):
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self.name = name
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def describe(self) -> str:
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return f'shape<{self.name}>'
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def area(self) -> float:
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raise NotImplementedError
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class Rect(Shape):
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def __init__(self, w: float, h: float):
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super().__init__('rect')
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self.w = w
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self.h = h
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def area(self) -> float:
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return self.w * self.h
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class Circle(Shape):
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def __init__(self, r: float):
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super().__init__('circle')
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self.r = r
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def area(self) -> float:
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return 3.14159265 * self.r * self.r
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def total_area(shapes):
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q = deque(shapes)
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total = 0.0
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while q:
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s = q.popleft()
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try:
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total += s.area()
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except NotImplementedError:
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continue
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return total
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if __name__ == '__main__':
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shapes = [Rect(3, 4), Circle(5), Rect(1, 1), Circle(2)]
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for s in shapes:
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print(s.describe(), '->', round(s.area(), 4))
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print('total area:', round(total_area(shapes), 4))
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