Thanks for the response and the link to the associated method, there was
indeed a numpy datatype (not) being serialized on the linux platform
codebase.
Numpy has become second nature; I apparently cannot distinguish between
it's errors and python errors!
On Saturday, June 27, 2015 at 1:02:00 AM UTC-4, Michael Bayer wrote:
>
>
>
> On 6/26/15 6:42 PM, Tim Pierson wrote:
>
> Hi,
> I wonder if anyone can help with the below stack-trace. The code in
> question works perfectly under Windows to MSSQL with the following
> connection string (params omitted):
>
> ENGINE = sa.create_engine('mssql://DBSERVER/DB?trusted_connection=yes')
>
>
> but something becomes an array when the same code is run in linux with the
> following connection string (params omitted):
>
> ENGINE = sa.create_engine('
>> mssql+pyodbc://USER:PASS@DBSERVER_IP:PORT/DB?driver=FreeTDS;TDS_Version=8.0
>> <javascript:>')
>
>
> Both strings can be used to run queries without a problem.
>
>
> that's not any message SQLAlchemy is rendering; a google search indicates
> it's a numpy-specific error. SQLAlchemy has no built-in numpy-oriented
> datatypes, so this is some numpy-specific SQLAlchemy extension that isn't
> correctly implementing comparison operations on the SQLAlchemy datatype
> object that is used for persistence (specifically this method:
> http://docs.sqlalchemy.org/en/rel_1_0/core/custom_types.html#sqlalchemy.types.TypeDecorator.compare_values).
>
>
>
> You'd need to provide detail on this datatype and how it is mapped, most
> usefully in the form of a self-contained test case; or better yet just
> report the test case up to the numpy-related library you're using.
>
>
>
>
>
> Thanks for any information!
>
> stack below:
>
> [. . .]
> self.db.session.commit()
> File
> "/home/tpierson/theano_env/lib/python2.7/site-packages/sqlalchemy/orm/scoping.py",
>
> line 150, in do
> return getattr(self.registry(), name)(*args, **kwargs)
> File
> "/home/tpierson/theano_env/lib/python2.7/site-packages/sqlalchemy/orm/session.py",
>
> line 790, in commit
> self.transaction.commit()
> File
> "/home/tpierson/theano_env/lib/python2.7/site-packages/sqlalchemy/orm/session.py",
>
> line 392, in commit
> self._prepare_impl()
> File
> "/home/tpierson/theano_env/lib/python2.7/site-packages/sqlalchemy/orm/session.py",
>
> line 372, in _prepare_impl
> self.session.flush()
> File
> "/home/tpierson/theano_env/lib/python2.7/site-packages/sqlalchemy/orm/session.py",
>
> line 2004, in flush
> self._flush(objects)
> File
> "/home/tpierson/theano_env/lib/python2.7/site-packages/sqlalchemy/orm/session.py",
>
> line 2122, in _flush
> transaction.rollback(_capture_exception=True)
> File
> "/home/tpierson/theano_env/lib/python2.7/site-packages/sqlalchemy/util/langhelpers.py",
>
> line 60, in __exit__
> compat.reraise(exc_type, exc_value, exc_tb)
> File
> "/home/tpierson/theano_env/lib/python2.7/site-packages/sqlalchemy/orm/session.py",
>
> line 2086, in _flush
> flush_context.execute()
> File
> "/home/tpierson/theano_env/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.py",
>
> line 373, in execute
> rec.execute(self)
> File
> "/home/tpierson/theano_env/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.py",
>
> line 532, in execute
> uow
> File
> "/home/tpierson/theano_env/lib/python2.7/site-packages/sqlalchemy/orm/persistence.py",
>
> line 170, in save_obj
> mapper, table, update)
> File
> "/home/tpierson/theano_env/lib/python2.7/site-packages/sqlalchemy/orm/persistence.py",
>
> line 630, in _emit_update_statements
> lambda rec: (
> File
> "/home/tpierson/theano_env/lib/python2.7/site-packages/sqlalchemy/orm/persistence.py",
>
> line 459, in _collect_update_commands
> value, state.committed_state[propkey]):
> ValueError: The truth value of an array with more than one element is
> ambiguous. Use a.any() or a.all()
>
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