reset-admin-password when set invalid param: NameError: global name 'GetoptError' is not defined

[root@centos-64-x64 bin]# ./couchbase-cli reset-admin-password -c 172.23.106.88:8091 -u Administrator -p password --aaa
Traceback (most recent call last):
File "/opt/couchbase/lib/python/couchbase-cli", line 385, in <module>
main()
File "/opt/couchbase/lib/python/couchbase-cli", line 258, in main
'delete-users=',
File "/usr/lib64/python2.6/getopt.py", line 89, in getopt
opts, args = do_longs(opts, args[0][2:], longopts, args[1:])
File "/opt/couchbase/lib/python/couchbase-cli", line 66, in _do_longs
has_arg, opt = _long_has_args(opt, longopts)
File "/opt/couchbase/lib/python/couchbase-cli", line 34, in _long_has_args
raise GetoptError(_('option --%s not recognized') % opt, opt)
NameError: global name 'GetoptError' is not defined