Trying to understand why same SQL returns different results.

When I run the SQL directly from psycopg and from a plpgsql function each produces different results.  One returns two
columnsand the other only returns one column. 

For example.

def sql_test1():
    cur = CONN.cursor()
    cur.execute("""
    CREATE OR REPLACE FUNCTION get_some_text()
    RETURNS RECORD AS $$
    DECLARE
        result RECORD;
    BEGIN
        SELECT 'some text' AS colume1, 'some more text' as column2 INTO result;
        RETURN result;
    END;
    $$ LANGUAGE plpgsql;""")

    print('test 1')
    cur.execute("""SELECT 'some text' AS colume1, 'some more text' as column2;""")
    print (cur.description)
    print (cur.fetchone())

    print ('test 2')
    cur.execute("""SELECT get_some_text();""")
    print (cur.description)
    print (cur.fetchone())

    CONN.commit()
    cur.close()

Output:
test 1
(Column(name='colume1', type_code=705, display_size=None, internal_size=-2, precision=None, scale=None, null_ok=None),
Column(name='column2',type_code=705, display_size=None, internal_size=-2, precision=None, scale=None, null_ok=None)) 
('some text', 'some more text')

test 2
(Column(name='get_some_text', type_code=2249, display_size=None, internal_size=-1, precision=None, scale=None,
null_ok=None),)
('("some text","some more text")',)

Is this the expected results and I am misunderstanding something?  Or is this a bug?

Neil

Python 3.3.0
Mac OS X 10.7.5, Postgresql 9.1.2, psycopg git clone,