21 lines
374 B
Python
21 lines
374 B
Python
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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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# main code
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a = Ball()
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b = Ball(2.0)
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a.introduction()
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b.introduction()
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