Sql Alchemy What is wrong?

Question

I got the tutorial

 http://www.rmunn.com/sqlalchemy-tutorial/tutorial.html

When I compile got the error message

The debugged program raised the exception unhandled NameError
"name 'BoundMetaData' is not defined"

I am use the latest sqlAlchemy .

How Could I fixed this?

After read this I modified to my own for latest version sqlAlchemy:

from sqlalchemy import *
engine = create_engine('mysql://root:mypassword@localhost/mysql')
metadata = MetaData()
users = Table('users', metadata,
    Column('user_id', Integer, primary_key=True),
    Column('name', String(40)),
    Column('age', Integer),
    Column('password', String),
)
metadata.create_all(engine) 
i = users.insert()
i.execute(name='Mary', age=30, password='secret')
i.execute({'name': 'John', 'age': 42},
          {'name': 'Susan', 'age': 57},
          {'name': 'Carl', 'age': 33})
s = users.select()
rs = s.execute()
row = rs.fetchone()
print 'Id:', row[0]
print 'Name:', row['name']
print 'Age:', row.age
print 'Password:', row[users.c.password]
for row in rs:
    print row.name, 'is', row.age, 'years old

It raise error

 raise exc.DBAPIError.instance(statement, parameters, e, connection_invalidated=is_disconnect)
sqlalchemy.exc.ProgrammingError: (ProgrammingError) (1064, "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ' \n\tPRIMARY KEY (user_id)\n)' at line 5") '\nCREATE TABLE users (\n\tuser_id INTEGER NOT NULL AUTO_INCREMENT, \n\tname VARCHAR(40), \n\tage INTEGER, \n\tpassword VARCHAR, \n\tPRIMARY KEY (user_id)\n)\n\n' ()

Answer 1

This tutorial is for SQLAlchemy version 0.2. Since the actual version is 0.5.7, I'd say the tutorial is severely outdated.

Try the official one instead.

---

EDIT:

Now you have a completely different question. You should've asked another question instead of editing this one.

Your problem now is that

Column('password', String),

Doesn't specify a size for the column.

Try

Column('password', String(20)),

Instead.

Answer 2

I believe you need to specify the length of your password field.

Column('password', String(100))

MySQL does not allow unbounded varchar columns. If you need that, use the sqlalchemy datatype Text instead.