title: just one row from sqlalchemy
body: <pre><code>import re
  from sqlalchemy import *
  
  db = create_engine('sqlite:///code.db')
  
  db.echo = True
  
  metadata = MetaData(db)
  
  halo4 = Table('emblem_codes', metadata, autoload=True)
  
  #########################
  ## Get One Unused Code ##
  #########################
  
  s = select([halo4.c.code, halo4.c.status=='None'])
  result = s.execute()
  
  for row in result:
      print row
  </code></pre>
  
  <p>My code returns all 80999 results. I only want one. Whats the best way to do this?</p>
  
  <p>This a sample of code.db:</p>
  
  <pre><code>(u'JRQRY-MYHW3-D67GR-7YWFF-CRJ31', None)
  (u'9D7DR-4WFDY-VG49F-3DYCG-7DYT5', None)
  (u'QR9WT-P3CTM-PW4WW-34JJ4-RFKV7', None)
  (u'7FMXQ-H97TC-FFYC6-XHXFV-Y7KR2', None)
  (u'VKHXW-29WC4-4PF4Y-2QMJ4-4W2H4', None)
  </code></pre>