Python's strftime dislikes years before 1900

>>> birthday = datetime.datetime(year=1879, month=3, day=19)
>>> birthday.strftime("%y/%m/%d")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: year=979 is before 1900; the datetime strftime() methods require year >= 1900

困りました。ValueError を例外処理するしかないのかな・・・

関連情報:

• Python's strftime dislikes years before 1900