Python 3 & non-ascii arguments => UnicodeEncodeError

[jkbrzt]

$ python --version
Python 3.2.2

$ http GET httpie.org hello:č
Traceback (most recent call last):
  File "/Users/jakub/.virtualenv/test-p3/lib/python3.2/site-packages/httpie-0.1.7_dev-py3.2.egg/httpie/__main__.py", line 146, in main
    allow_redirects=args.allow_redirects,
  File "/Users/jakub/.virtualenv/test-p3/lib/python3.2/site-packages/requests-0.10.6-py3.2.egg/requests/api.py", line 39, in request
    return s.request(method=method, url=url, **kwargs)
  File "/Users/jakub/.virtualenv/test-p3/lib/python3.2/site-packages/requests-0.10.6-py3.2.egg/requests/sessions.py", line 200, in request
    r.send(prefetch=prefetch)
  File "/Users/jakub/.virtualenv/test-p3/lib/python3.2/site-packages/requests-0.10.6-py3.2.egg/requests/models.py", line 535, in send
    timeout=self.timeout,
  File "/Users/jakub/.virtualenv/test-p3/lib/python3.2/site-packages/requests-0.10.6-py3.2.egg/requests/packages/urllib3/connectionpool.py", line 384, in urlopen
    body=body, headers=headers)
  File "/Users/jakub/.virtualenv/test-p3/lib/python3.2/site-packages/requests-0.10.6-py3.2.egg/requests/packages/urllib3/connectionpool.py", line 260, in _make_request
    conn.request(method, url, **httplib_request_kw)
  File "/usr/local/Cellar/python3/3.2.2/lib/python3.2/http/client.py", line 964, in request
    self._send_request(method, url, body, headers)
  File "/usr/local/Cellar/python3/3.2.2/lib/python3.2/http/client.py", line 997, in _send_request
    self.putheader(hdr, value)
  File "/usr/local/Cellar/python3/3.2.2/lib/python3.2/http/client.py", line 940, in putheader
    values[i] = one_value.encode('latin1')
UnicodeEncodeError: 'latin-1' codec can't encode character '\u010d' in position 0: ordinal not in range(256)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/jakub/.virtualenv/test-p3/bin/http", line 9, in <module>
    load_entry_point('httpie==0.1.7-dev', 'console_scripts', 'http')()
  File "/Users/jakub/.virtualenv/test-p3/lib/python3.2/site-packages/httpie-0.1.7_dev-py3.2.egg/httpie/__main__.py", line 154, in main
    sys.stderr.write(str(e.message) + NEW_LINE)
AttributeError: 'UnicodeEncodeError' object has no attribute 'message'