52 lines
1.1 KiB
Python
52 lines
1.1 KiB
Python
import numpy as np
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class Ball:
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__diameter__ = 0.0
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## Methods
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# Constructor
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def __init__(self, diameter = 1.0):
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self.__diameter__ = diameter
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pass
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# a simple method
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def introduction(self):
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print(f"My diameter is {self.__diameter__:.3f}.")
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pass
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# Getter
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def get_diameter(self):
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return self.__diameter__
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# overload __add_ (+)
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def __add__(self, other):
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d1 = self.get_diameter()
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if(isinstance(other, Ball)):
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d2 = other.get_diameter()
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combined_volume = 1/6 * np.pi * (d1**3 + d2**3)
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elif(isinstance(other, int) or isinstance(other, float)):
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combined_volume = 1/6 * np.pi*d1**3 + other
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else:
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raise ValueError("Invalid summand.")
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d_combined = np.power(6 * combined_volume / np.pi, 1/3)
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return Ball(d_combined)
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# overload __radd__ (number + Ball)
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def __radd__(self, other):
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return self + other
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# main code
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a = Ball()
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b = Ball(2.0)
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c = a + b
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d = a + 5
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e = 5 + a
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a.introduction()
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b.introduction()
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c.introduction()
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d.introduction()
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