¿Por qué este decorador no puede importarse desde un módulo con "from module import *"?

I have the following decorator inside a module:

class CachedProperty(object):
    """Decorator that lazy-loads the value of a property.

    The first time the property is accessed, the original property function is
    executed. The value it returns is set as the new value of that instance's
    property, replacing the original method.
    """

    def __init__(self, wrapped):
        self.wrapped = wrapped
        try:
            self.__doc__ = wrapped.__doc__
        except:
            pass

    def __get__(self, instance, instance_type=None):
        if instance is None:
            return self

        value = self.wrapped(instance)
        setattr(instance, self.wrapped.__name__, value)

        return value

I want to import this decorator and other stuff from the module like this:

from clang.cindex import *

But I'm unable to import that single decorator this way, it works if I do:

from clang.cindex import CachedProperty

entonces puedo usar @CachedProperty.

Why can't I import this class through * while I'm able to import others?