28 lines
665 B
Python
28 lines
665 B
Python
# 实现 Circle 类...
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import math
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class Circle():
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radius = float(0)
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def __init__(self, radius:float) -> None:
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self.radius = radius
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def get_peimeter(self) -> float:
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return math.pi * self.radius * 2
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def get_area(self) -> float:
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return math.pi * (self.radius ** 2)
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def __str__(self) -> str:
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return f"radius: {self.radius}\npeimeter: {self.get_peimeter()}\narea: {self.get_area()}\n"
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def main() -> int:
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cir1 = Circle(3.0)
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# print(str(cir1))
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print(f"cir1: peimeter: {cir1.get_peimeter()}")
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print(f"cir1: narea: {cir1.get_area()}")
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return 0
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if __name__ == "__main__":
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main() |