Try moving the "metadata.create_all(engine)" below the User class declaration.
Like:
<snipped code>
class User(Base):
__tablename__ = 'users'
id = Column(Integer, primary_key=True)
name = Column(String)
fullname = Column(String)
password = Column(String)
def __init__(self, name, fullname, password):
self.name = name
self.fullname = fullname
self.password = password
def __repr__(self):
return "<User('%s','%s', '%s')>" % (self.name, self.fullname,
self.password)
metadata.create_all(engine)
<snipped code>
After User class is evaluated, the metadata object will have knowledge
about the "users" table.
Cheers
On Wed, Sep 15, 2010 at 16:52, MichelleB <mbrenne...@gmail.com> wrote:
> This is driving me crazy since I can't even get through the tutorial :
> ( Thanks for any help! code, then error below.
>
> #! /usr/local/bin/python
>
> """ dbtestpy
>
> Walking through sqlalchemy tutorial
>
> Author: Michelle Brenner
> """
>
> from sqlalchemy import Table, Column, Integer, Float, Sequence,
> String, MetaData, ForeignKey, create_engine, or_, func
> from sqlalchemy.orm import mapper, sessionmaker
> from sqlalchemy.orm.exc import NoResultFound
> engine = create_engine('sqlite:///dbtest.db', echo=False)
>
>
> Session = sessionmaker(bind=engine)
> Session.configure(bind=engine)
> session = Session()
>
> #creating db
> from sqlalchemy.ext.declarative import declarative_base
>
> Base = declarative_base(bind=engine)
> metadata = Base.metadata
> metadata.create_all(engine)
>
> class User(Base):
> __tablename__ = 'users'
> id = Column(Integer, primary_key=True)
> name = Column(String)
> fullname = Column(String)
> password = Column(String)
> def __init__(self, name, fullname, password):
> self.name = name
> self.fullname = fullname
> self.password = password
> def __repr__(self):
> return "<User('%s','%s', '%s')>" % (self.name, self.fullname,
> self.password)
>
> users_table = User.__table__
>
> #adding data
> ed_user = User('ed', 'Ed Jones', 'edspassword')
>
> #querying data
> session.add(ed_user)
> session.commit()
>
> #our_user = session.query(User).filter_by(name='ed').first()
> #our_user
>
> Traceback (most recent call last):
> File "dbtest.py", line 48, in ?
> session.commit()
> File "/net/vol240/shots/spi/home/python/common/sqlalchemy/orm/
> session.py", line 673, in commit
> self.transaction.commit()
> File "/net/vol240/shots/spi/home/python/common/sqlalchemy/orm/
> session.py", line 378, in commit
> self._prepare_impl()
> File "/net/vol240/shots/spi/home/python/common/sqlalchemy/orm/
> session.py", line 362, in _prepare_impl
> self.session.flush()
> File "/net/vol240/shots/spi/home/python/common/sqlalchemy/orm/
> session.py", line 1354, in flush
> self._flush(objects)
> File "/net/vol240/shots/spi/home/python/common/sqlalchemy/orm/
> session.py", line 1432, in _flush
> flush_context.execute()
> File "/net/vol240/shots/spi/home/python/common/sqlalchemy/orm/
> unitofwork.py", line 257, in execute
> UOWExecutor().execute(self, tasks)
> File "/net/vol240/shots/spi/home/python/common/sqlalchemy/orm/
> unitofwork.py", line 720, in execute
> self.execute_save_steps(trans, task)
> File "/net/vol240/shots/spi/home/python/common/sqlalchemy/orm/
> unitofwork.py", line 735, in execute_save_steps
> self.save_objects(trans, task)
> File "/net/vol240/shots/spi/home/python/common/sqlalchemy/orm/
> unitofwork.py", line 726, in save_objects
> task.mapper._save_obj(task.polymorphic_tosave_objects, trans)
> File "/net/vol240/shots/spi/home/python/common/sqlalchemy/orm/
> mapper.py", line 1387, in _save_obj
> c = connection.execute(statement.values(value_params), params)
> File "/net/vol240/shots/spi/home/python/common/sqlalchemy/engine/
> base.py", line 824, in execute
> return Connection.executors[c](self, object, multiparams, params)
> File "/net/vol240/shots/spi/home/python/common/sqlalchemy/engine/
> base.py", line 874, in _execute_clauseelement
> return self.__execute_context(context)
> File "/net/vol240/shots/spi/home/python/common/sqlalchemy/engine/
> base.py", line 896, in __execute_context
> self._cursor_execute(context.cursor, context.statement,
> context.parameters[0], context=context)
> File "/net/vol240/shots/spi/home/python/common/sqlalchemy/engine/
> base.py", line 950, in _cursor_execute
> self._handle_dbapi_exception(e, statement, parameters, cursor,
> context)
> File "/net/vol240/shots/spi/home/python/common/sqlalchemy/engine/
> base.py", line 931, in _handle_dbapi_exception
> raise exc.DBAPIError.instance(statement, parameters, e,
> connection_invalidated=is_disconnect)
> sqlalchemy.exc.OperationalError: (OperationalError) no such table:
> users u'INSERT INTO users (name, fullname, password) VALUES
> (?, ?, ?)' ['ed', 'Ed Jones', 'edspassword']
>
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