sqlalchemy无法从sqlite3（0000-00-00）读取空日期：ValueError：year超出范围

Question

当我尝试使用0000-00-00 00:00:00查询包含sqlachemy等日期的数据库时，我得到ValueError: year is out of range。

这是db dump：

这是堆栈跟踪：

File "/home/rob/.virtualenvs/calif/lib/python3.5/site-packages/sqlalchemy/engine/result.py" in items
  163.         return [(key, self[key]) for key in self.keys()]

File "/home/rob/.virtualenvs/calif/lib/python3.5/site-packages/sqlalchemy/engine/result.py" in <listcomp>
  163.         return [(key, self[key]) for key in self.keys()]

File "/home/rob/.virtualenvs/calif/lib/python3.5/site-packages/sqlalchemy/engine/result.py" in __getitem__
  90.                 return processor(self._row[index])

File "/home/rob/.virtualenvs/calif/lib/python3.5/site-packages/sqlalchemy/processors.py" in process
  48.                 return type_(*list(map(int, m.groups(0))))

Exception Type: ValueError at /
Exception Value: year is out of range

这是正常的吗？ sqlalchemy可以读这样的日期吗？这是python的限制吗？有没有解决方法来保持日期不变（不转换为无）？

Answer 1

通过IRC上的inklesspen获得答案：Python datetime representation has minimum year and it's 1