How do I get SQLAlchemy to include duplicate columns?

I am learning the SQLAlchemy expression language and I am trying to execute a trivial query that returns one duplicate column via select([users.c.id, users.c.id])

:

from sqlalchemy import create_engine, Table, Column, Integer, String, MetaData, insert, select
engine = create_engine('sqlite:///:memory:', echo=True)
conn = engine.connect()
metadata = MetaData()
users = Table('users', metadata,
Column('id', Integer, primary_key=True),
Column('name', String),
Column('fullname', String),
)
metadata.create_all(engine)
conn.execute(users.insert(), [
{'id': 1, 'name' : 'jack', 'fullname': 'Jack Jones'},
{'id': 2, 'name' : 'wendy', 'fullname': 'Wendy Williams'},
])
print(list(conn.execute(select([users.c.id, users.c.id]))))

      

        
        
        
      

    

What are the outputs:

[(1,), (2,)]

      

        
        
        
      

    

Ie, only one of the two requested columns. I expected:

[(1, 2), (2, 2)]

      

        
        
        
      

    

To check if my expectations were correct, I ran equivalent queries directly in sqlite3 and PostgreSQL 9.2 ([1] and [2] below), both of which correctly returned duplicate IDs. I am using SQLAlchemy version 0.8.0b2, Python 3.2.3, sqlite3 3.6.12 and Mac OS X 10.6 and 10.7.

Thanks in advance!

[1] sqlite3

$ sqlite3 temp.db
CREATE TABLE users(id INTEGER, name TEXT, fullname TEXT);
INSERT INTO users VALUES(1, 'jack', 'Jack Jones');
INSERT INTO users VALUES(2, 'wendy', 'Wendy Williams');
SELECT id, id FROM users;
->
1|1
2|2

      

        
        
        
      

    

[2] PostgreSQL

$ /Library/PostgreSQL/9.2/bin/psql -U postgres
CREATE DATABASE temp;
CREATE TABLE users(id INTEGER, name TEXT, fullname TEXT);
INSERT INTO users VALUES(1, 'jack', 'Jack Jones');
INSERT INTO users VALUES(2, 'wendy', 'Wendy Williams');
SELECT id, id FROM users;
->
1 |  1
2 |  2