I have a strange error using Python 3.3.0 and SQLAlchemy 0.8.0:
from sqlalchemy import create_engine, Integer, String, Text, Column, Sequence,
DateTime, ForeignKeyfrom sqlalchemy.orm import sessionmaker, relationship,
backreffrom sqlalchemy.ext.declarative import declarative_base
engine = create_engine(sqlite:///:memory:, echo=True)Session =
sessionmaker(bind = engine)Base = declarative_base()
class Product(Base):
__tablename__ = products
id = Column(Integer, primary_key=True)
name = Column(String(200))
description = Column(Text)
Base.metadata.create_all(engine)
session = Session()
product = Product()
product.id = 1
product.name = Test
product.description = Test
session.add(product)print(product in session) # Expected true
session.commit()print(session.query(Product).all()) # Expected the previous item
As commented in code I expected the add method to add the product to the
database using an INSERT. But it doesn't nor does it throw an exception.
This is the log:
2013-04-16 18:03:14,368 INFO sqlalchemy.engine.base.Engine PRAGMA
table_info(products)2013-04-16 18:03:14,369 INFO
sqlalchemy.engine.base.Engine ()2013-04-16 18:03:14,371 INFO
sqlalchemy.engine.base.Engine
CREATE TABLE products (
id INTEGER NOT NULL,
name VARCHAR(200),
description TEXT,
PRIMARY KEY (id))
2013-04-16 18:03:14,371 INFO sqlalchemy.engine.base.Engine ()2013-04-16
18:03:14,371 INFO sqlalchemy.engine.base.Engine COMMITFalse2013-04-16
18:04:04,706 INFO sqlalchemy.engine.base.Engine BEGIN (implicit)2013-04-16
18:04:04,708 INFO sqlalchemy.engine.base.Engine SELECT products.id AS
products_id, products.name AS products_name, products.description AS
products_description
FROM products2013-04-16 18:04:04,709 INFO sqlalchemy.engine.base.Engine ()[]
I already tried several things:
- Changing the engine doesn't work: I also tried postgresql.
- I tried debugging. When I reach the body of the add method there is
nothing to step into.
Am I doing something wrong or is this a bug?
(Also posted this question on Stack Overflow:
http://stackoverflow.com/questions/16041868/sqlalchemy-session-add-doesnt-work
)
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