import inspect


def from_module(module, object):
    """
    Return true if the given object is defined in the given module.
    """
    if module is None:
        return True
    elif inspect.getmodule(object) is not None:
        return module is inspect.getmodule(object)
    elif inspect.isfunction(object):
        return module.__dict__ is object.__globals__
    elif inspect.isclass(object):
        return module.__name__ == object.__module__
    elif hasattr(object, '__module__'):
        return module.__name__ == object.__module__
    elif isinstance(object, property):
        return True # [XX] no way not be sure.
    else:
        raise ValueError("object must be a class or function")