hybrid.py 文件源码

def __init__(self, func, expr=None):
        """Create a new :class:`.hybrid_method`.

        Usage is typically via decorator::

            from sqlalchemy.ext.hybrid import hybrid_method

            class SomeClass(object):
                @hybrid_method
                def value(self, x, y):
                    return self._value + x + y

                @value.expression
                def value(self, x, y):
                    return func.some_function(self._value, x, y)

        """
        self.func = func
        self.expr = expr or func