42 lines
831 B
Python
42 lines
831 B
Python
def typedproperty(name, expected_type):
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private_name = "_" + name
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@property
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def value(self):
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return getattr(self, private_name)
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@value.setter
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def value(self, val):
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if not isinstance(val, expected_type):
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raise TypeError(f"Expected {expected_type}")
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setattr(self, private_name, val)
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return value
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def String(name):
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return typedproperty(name, str)
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def Integer(name):
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return typedproperty(name, int)
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def Float(name):
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return typedproperty(name, float)
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if __name__ == "__main__":
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class Stock:
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name = String("name")
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shares = Integer("shares")
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price = Float("price")
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def __init__(self, name, shares, price):
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self.name = name
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self.shares = shares
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self.price = price
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print(Stock)
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