¡@
python Programming Glossary: dbsessionWhy is SQLAlchemy insert with sqlite 25 times slower than using sqlite3 directly? http://stackoverflow.com/questions/11769366/why-is-sqlalchemy-insert-with-sqlite-25-times-slower-than-using-sqlite3-directly import scoped_session sessionmaker Base declarative_base DBSession scoped_session sessionmaker class Customer Base __tablename__.. sqlalchemy.db' engine create_engine dbname echo False DBSession.configure bind engine autoflush False expire_on_commit False.. i in range n customer Customer customer.name 'NAME ' str i DBSession.add customer DBSession.commit print SqlAlchemy Total time for..
Pyramid authorization for stored items http://stackoverflow.com/questions/5761617/pyramid-authorization-for-stored-items def __getitem__ self key # get a database connection s DBSession obj s.query Foo .filter_by id key .scalar if obj is None raise..
How to integrate SQLAlchemy and a subclassed Numpy.ndarray smoothly and in a pythonic way? http://stackoverflow.com/questions/8940802/how-to-integrate-sqlalchemy-and-a-subclassed-numpy-ndarray-smoothly-and-in-a-pyt from sqlalchemy.types import TypeDecorator CHAR DBSession scoped_session sessionmaker Base declarative_base #### New SQLAlchemy.. engine sa.create_engine 'sqlite memory ' echo True DBSession.configure bind engine Base.metadata.create_all engine session.. bind engine Base.metadata.create_all engine session DBSession mn1 MyNumpy 1 2 3 good data mn2 MyNumpy 2 3 4 bad data # Save..
SQLAlchemy proper session handling in multi-thread applications http://stackoverflow.com/questions/9619789/sqlalchemy-proper-session-handling-in-multi-thread-applications create_engine DATABASE_CONNECTION_INFO echo False self.DBSession scoped_session sessionmaker autoflush True autocommit False.. bind self.db_engine def _worker self db_session self.DBSession while True try task_id self.task_queue.get False try item.. return def start self try db_session self.DBSession all_items db_session.query MyModel .all for item in all_items..
|