Error with uploading large object includes unicode path

I have the following issue when I try to upload a big file includes unicode path with python-swiftclient==2.7.0.

$ swift --debug --info upload -S 200M test テスト/dummy.dat
<..omit..>
Traceback (most recent call last):
  File "/usr/lib/python2.6/site-packages/swiftclient/service.py", line 1911, in _upload_object_job
    quote(seg_container), quote(obj),
  File "/usr/lib64/python2.6/urllib.py", line 1236, in quote
    res = map(safe_map.__getitem__, s)
KeyError: u'\u30c6'
u'\u30c6'
テスト/dummy.dat segment 2
テスト/dummy.dat segment 1
テスト/dummy.dat segment 0

I think the cause of this problem is the following code.

in 'python-swiftclient/swiftclient/service.py', line 1911

        else:
           new_object_manifest = '%s/%s/%s/%s/%s/' % (
               quote(seg_container), quote(obj),

It should be such as the following code.

        else:
           new_object_manifest = '%s/%s/%s/%s/%s/' % (
               quote(seg_container.encode('utf8')), quote(obj.encode('utf8')),

I have succeeded when I try to upload with the above edited code.

$ swift --debug --info upload -S 200M test テスト/dummy.dat
<..omit..>
テスト/dummy.dat segment 2
テスト/dummy.dat segment 0
テスト/dummy.dat segment 1
テスト/dummy.dat

My Enviroment:

$ cat /etc/redhat-release
CentOS release 6.7 (Final)
$ echo $LANG
ja_JP.UTF-8
$ python --version
Python 2.6.6
$ swift --version
python-swiftclient 2.7.0