code: def list_packages(conn=None):
      '''
      List files for an installed package
      '''
      close = False
      if conn is None:
          close = True
          conn = init()
  
      ret = []
      data = conn.execute('SELECT package FROM packages')
      for pkg in data.fetchall():
          ret.append(pkg)
  
      if close:
          conn.close()
      return ref list_packages(conn=None):
      '''
      List files for an installed package
      '''
      close = False
      if conn is None:
          close = True
          conn = init()
  
      ret = []
      data = conn.execute('SELECT package FROM packages')
      for pkg in data.fetchall():
          ret.append(pkg)
  
      if close:
          conn.close()
      return ret
docs: List files for an installed package