human
Give me a the Python program you requested given the following:
Complete the below
def _validator_events(desc, key, validator, include_removes, include_backrefs):

    ''''Runs a validation method on an attribute value to be set or
    appended.'
    '''
assistant
#Here is the Python program you requested.
    if (not include_backrefs):
        def detect_is_backref(state, initiator):
            impl = state.manager[key].impl
            return (initiator.impl is not impl)
    if include_removes:
        def append(state, value, initiator):
            if ((initiator.op is not attributes.OP_BULK_REPLACE) and (include_backrefs or (not detect_is_backref(state, initiator)))):
                return validator(state.obj(), key, value, False)
            else:
                return value
        def bulk_set(state, values, initiator):
            if (include_backrefs or (not detect_is_backref(state, initiator))):
                obj = state.obj()
                values[:] = [validator(obj, key, value, False) for value in values]
        def set_(state, value, oldvalue, initiator):
            if (include_backrefs or (not detect_is_backref(state, initiator))):
                return validator(state.obj(), key, value, False)
            else:
                return value
        def remove(state, value, initiator):
            if (include_backrefs or (not detect_is_backref(state, initiator))):
                validator(state.obj(), key, value, True)
    else:
        def append(state, value, initiator):
            if ((initiator.op is not attributes.OP_BULK_REPLACE) and (include_backrefs or (not detect_is_backref(state, initiator)))):
                return validator(state.obj(), key, value)
            else:
                return value
        def bulk_set(state, values, initiator):
            if (include_backrefs or (not detect_is_backref(state, initiator))):
                obj = state.obj()
                values[:] = [validator(obj, key, value) for value in values]
        def set_(state, value, oldvalue, initiator):
            if (include_backrefs or (not detect_is_backref(state, initiator))):
                return validator(state.obj(), key, value)
            else:
                return value
    event.listen(desc, 'append', append, raw=True, retval=True)
    event.listen(desc, 'bulk_replace', bulk_set,...