SQLAlchemy-0.5.3 problem

Есть проблема, SQLAlchemy все время ругается на то, что курсор уже закрыт. Может кто сталкивался или поможет указать в каком напрвлении думать? У меня, честно говоря, как идеи коничились.


MacOS X, в качестве ODBC использую стандартную идущую с макосью iODBC, в качестве драйвера использую в FreeTDS.

В док-во, что FreeTDS работает вот лог:


[tukan@2kan-2:~/bigur]% tsql -S libra -p 1433 -U user
locale is "ru_RU.KOI8-R/UTF-8/ru_RU.KOI8-R/ru_RU.KOI8-R/ru_RU.KOI8-R/ru_RU.KOI8-R"
locale charset is ""
Password:
1> select * from tax
2> go
<...>
(4 rows affected)


Работает и odbc:


iodbctest "DSN=libra;UID=user;PWD=password"
iODBC Demonstration program
This program shows an interactive SQL processor
Driver Manager: 03.52.0406.1211
Driver: 0.82 (libtdsodbc.so)

SQL>...


Работает и pyodbc:


tukan@2kan-2:~/bigur/calculation]% py
Python 2.5.2 (r252:60911, Feb 23 2009, 21:22:55)
[GCC 4.0.1 (Apple Inc. build 5488)] on darwin
Type "help", "copyright", "credits" or "license" for more information.

>>> import pyodbc
>>> pyodbc.connect("DSN=libra;UID=gik;PWD=123")
< pyodbc.connection object="object" at="at" 0x57620="0x57620" >
>>> c = _.cursor()
>>> c.execute("SELECT * from tax").fetchall()
<...>


Дальше я пытаюсь использовать алхимию:


[tukan@2kan-2:~/bigur/calculation]% python
Python 2.5.2 (r252:60911, Feb 23 2009, 21:22:55)
[GCC 4.0.1 (Apple Inc. build 5488)] on darwin
Type "help", "copyright", "credits" or "license" for more information.

>>> from sqlalchemy import *
>>> db = create_engine('mssql://user:password@/?dsn=libra&driver=FreeTDS')
>>> metadata = MetaData()
>>> metadata.bind = db
>>> metadata.bind.echo = True
>>> users_table = Table('tax', metadata, autoload=True)
2009-02-24 20:54:55,261 INFO sqlalchemy.engine.base.Engine.0x...2850 SELECT user_name() as user_name;
2009-02-24 20:54:55,261 INFO sqlalchemy.engine.base.Engine.0x...2850 []
2009-02-24 20:54:55,280 WARNING sqlalchemy.pool.QueuePool.0x...27b0 Error closing cursor: Attempt to use a closed cursor.
2009-02-24 20:54:55,280 INFO sqlalchemy.engine.base.Engine.0x...2850 ROLLBACK
Traceback (most recent call last):
File "", line 1, in
File "/opt/local/lib/python2.5/site-packages/SQLAlchemy-0.5.3dev_r5814-py2.5.egg/sqlalchemy/schema.py", line 113, in __call__
return type.__call__(self, name, metadata, *args, **kwargs)
File "/opt/local/lib/python2.5/site-packages/SQLAlchemy-0.5.3dev_r5814-py2.5.egg/sqlalchemy/schema.py", line 241, in __init__
_bind_or_error(metadata).reflecttable(self, include_columns=include_columns)
File "/opt/local/lib/python2.5/site-packages/SQLAlchemy-0.5.3dev_r5814-py2.5.egg/sqlalchemy/engine/base.py", line 1265, in reflecttable
self.dialect.reflecttable(conn, table, include_columns)
File "/opt/local/lib/python2.5/site-packages/SQLAlchemy-0.5.3dev_r5814-py2.5.egg/sqlalchemy/databases/mssql.py", line 1123, in reflecttable
current_schema = self.get_default_schema_name(connection)
File "", line 1, in
File "/opt/local/lib/python2.5/site-packages/SQLAlchemy-0.5.3dev_r5814-py2.5.egg/sqlalchemy/engine/base.py", line 1894, in decorated
connection.info[key] = val = fn(self, connection)
File "/opt/local/lib/python2.5/site-packages/SQLAlchemy-0.5.3dev_r5814-py2.5.egg/sqlalchemy/databases/mssql.py", line 1070, in get_default_schema_name
user_name = connection.scalar(sql.text(query))
File "/opt/local/lib/python2.5/site-packages/SQLAlchemy-0.5.3dev_r5814-py2.5.egg/sqlalchemy/engine/base.py", line 814, in scalar
return self.execute(object, *multiparams, **params).scalar()
File "/opt/local/lib/python2.5/site-packages/SQLAlchemy-0.5.3dev_r5814-py2.5.egg/sqlalchemy/engine/base.py", line 1676, in scalar
self.connection._handle_dbapi_exception(e, None, None, self.cursor, self.context)
File "/opt/local/lib/python2.5/site-packages/SQLAlchemy-0.5.3dev_r5814-py2.5.egg/sqlalchemy/engine/base.py", line 931, in _handle_dbapi_exception
raise exc.DBAPIError.instance(statement, parameters, e, connection_invalidated=is_disconnect)
sqlalchemy.exc.ProgrammingError: (ProgrammingError) Attempt to use a closed cursor. None None


Может есть у кого какие идеи? У меня просто уже их нет...