korean

>>> from korean import Noun, NumberWord, Loanword
>>> fmt = u'{subj:은} {obj:을} 먹었다.'
>>> print fmt.format(subj=Noun(u'나'), obj=Noun(u'밥'))
나는 밥을 먹었다.
>>> print fmt.format(subj=Noun(u'나'), obj=Noun(u'bob'))
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "korean/morphology/substantive.py", line 38, in __format__
    text = merge(self, Particle(separated_spec.pop(0)))
  File "korean/morphology/__init__.py", line 77, in merge
    suffix = cls.pick_allomorph(suffix, suffix_of=prefix)
  File "korean/morphology/__init__.py", line 68, in pick_allomorph
    return bound_func(prefix_of or suffix_of)
  File "korean/morphology/particle.py", line 103, in pick_allomorph_after_substantive
    return self.pick_allomorph_after_char(substantive.read()[-1])
  File "korean/morphology/particle.py", line 91, in pick_allomorph_after_char
    final = hangul.get_final(char)
  File "korean/hangul.py", line 95, in get_final
    return FINALS[char_offset(char) % len(FINALS)]
  File "korean/hangul.py", line 44, in char_offset
    assert is_hangul(char)
AssertionError