Python-сообщество

Вероятно, сталкивались с ошибкой “TypeError: incompatible types, LP_c_short instance instead of LP_c_short instance”.

Подскажите, пожалуйста, как от нее можно избавиться?

Лог Apache:
mod_wsgi (pid=4789): Exception occurred processing WSGI script ‘/home/nasmork/PycharmProjects/accounting/myapp.py’., referer: http://www.example.com/purchadding.py
Traceback (most recent call last):, referer: http://www.example.com/purchadding.py
File “/home/nasmork/PycharmProjects/accounting/myapp.py”, line 17, in application, referer: http://www.example.com/purchadding.py
cur.execute(select_purchase), referer: http://www.example.com/purchadding.py
File “/usr/local/lib/python2.7/dist-packages/fdb/fbcore.py”, line 3322, in execute, referer: http://www.example.com/purchadding.py
PreparedStatement(operation, self, True)), referer: http://www.example.com/purchadding.py
File “/usr/local/lib/python2.7/dist-packages/fdb/fbcore.py”, line 1989, in __init__, referer: http://www.example.com/purchadding.py
self.__coerce_XSQLDA(self._out_sqlda), referer: http://www.example.com/purchadding.py
File “/usr/local/lib/python2.7/dist-packages/fdb/fbcore.py”, line 2284, in __coerce_XSQLDA, referer: http://www.example.com/purchadding.py
sqlvar.sqlind = ctypes.pointer(ISC_SHORT(0)), referer: http://www.example.com/purchadding.py
TypeError: incompatible types, LP_c_short instance instead of LP_c_short instance, referer: http://www.example.com/purchadding.py

пробовали CAST ( … AS ….) в нужный тип ?