human
Solve the following python programming problem given the following code:
def register(handler_obj) : 
    "
    DEPRECATION WARNING: This function is deprecated as of Cement 2.7.x and
    will be removed in future versions of Cement.
    Use ``CementApp.handler.register()`` instead.

    ---

    Register a handler object to a handler.  If the same object is already
    registered then no exception is raised, however if a different object
    attempts to be registered to the same name a FrameworkError is
    raised.

    :param handler_obj: The uninstantiated handler object to register.
    :raises: cement.core.exc.InterfaceError
    :raises: cement.core.exc.FrameworkError

    Usage:

    .. code-block:: python

        from cement.core import handler

        class MyDatabaseHandler(object):
            class Meta:
                interface = IDatabase
                label = 'mysql'

            def connect(self):
            ...

        handler.register(MyDatabaseHandler)

    " 
    LOG.debug ('Cement Deprecation Warning: `handler.register()` has been deprecated, and will be removed in future versions of Cement.  You should now use `CementApp.handler.register()` instead.') 
    orig_obj = handler_obj 
    obj = orig_obj () 
    if ((not hasattr (obj._meta, 'label')) or (not obj._meta.label)) : 
        raise exc.InterfaceError ((('Invalid handler %s, ' % orig_obj) + "missing '_meta.label'.")) 
if ((not hasattr (obj._meta, 'interface')) or (not obj._meta.interface)) : 
        raise exc.InterfaceError ((('Invalid handler %s, ' % orig_obj) + "missing '_meta.interface'.")) 
orig_obj.Meta.label = re.sub ('-', '_', obj._meta.label) 
    obj._meta.label = re.sub ('-', '_', obj._meta.label) 
    handler_type = obj._meta.interface.IMeta.label 
    LOG.debug (("registering handler '%s' into handlers['%s']['%s']" % (orig_obj, handler_type, obj._meta.label))) 
    if (handler_type not in backend.__handlers__) : 
        raise exc.FrameworkError (("Handler type '%s' doesn't exist." % handler_type)) 
if ((handler_type._meta.label in backend.__handlers__ [handler_type]) and...

    
    

    Fix the buggy line: if ((handler_type._meta.label in backend.__handlers__ [handler_type]) and (backend.__handlers__ [handler_type] [obj._meta.label] != obj)) :
assistant
#Here is Python program to fix the buggy line: if ((handler_type.

if ((obj._meta.label in backend.__handlers__ [handler_type]) and (backend.__handlers__ [handler_type] [obj._meta.label] != obj)) :