Created
April 23, 2015 08:19
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| class Property(object): | |
| "Emulate PyProperty_Type() in Objects/descrobject.c" | |
| def __init__(self, fget=None, fset=None, fdel=None, doc=None): | |
| self.fget = fget | |
| self.fset = fset | |
| self.fdel = fdel | |
| if doc is None and fget is not None: | |
| doc = fget.__doc__ | |
| self.__doc__ = doc | |
| def __get__(self, obj, objtype=None): | |
| if obj is None: | |
| return self | |
| if self.fget is None: | |
| raise AttributeError("unreadable attribute") | |
| return self.fget(obj) | |
| def __set__(self, obj, value): | |
| if self.fset is None: | |
| raise AttributeError("can't set attribute") | |
| self.fset(obj, value) | |
| def __delete__(self, obj): | |
| if self.fdel is None: | |
| raise AttributeError("can't delete attribute") | |
| self.fdel(obj) | |
| def getter(self, fget): | |
| return type(self)(fget, self.fset, self.fdel, self.__doc__) | |
| def setter(self, fset): | |
| return type(self)(self.fget, fset, self.fdel, self.__doc__) | |
| def deleter(self, fdel): | |
| return type(self)(self.fget, self.fset, fdel, self.__doc__) |
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