pyramid.decorator
¶
- reify(wrapped)[源代码]¶
用作类方法修饰器。它的运行方式几乎与Python完全相同
@property
decorator,但它在第一次调用后将它所修饰的方法的结果放入实例dict,有效地用实例变量替换它所修饰的函数。用Python的话说,它是一个非数据描述符。以下是一个示例及其用法:>>> from pyramid.decorator import reify >>> class Foo: ... @reify ... def jammy(self): ... print('jammy called') ... return 1 >>> f = Foo() >>> v = f.jammy jammy called >>> print(v) 1 >>> f.jammy 1 >>> # jammy func not called the second time; it replaced itself with 1 >>> # Note: reassignment is possible >>> f.jammy = 2 >>> f.jammy 2