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class BaseCalculator:
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@staticmethod
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def add(a, b):
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return a + b
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@staticmethod
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def subtract(a, b):
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return a - b
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@staticmethod
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def multiply(a, b):
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return a * b
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@staticmethod
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def divide(a, b):
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if b == 0:
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raise ZeroDivisionError("除数不能为0")
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return a / b |
