# Pastebin CXMzS24v
(craton) ubuntu@ubuntu-xenial:~/craton$ python3 t-roles.py 
/home/ubuntu/craton/lib/python3.5/site-packages/sqlalchemy/orm/mapper.py:1228: SAWarning: Could not assemble any primary keys for locally mapped table 'users' - no rows will be persisted in this Table.
  % self.local_table.description)
2016-12-29 23:04:42,407 INFO sqlalchemy.engine.base.Engine SHOW VARIABLES LIKE 'sql_mode'
2016-12-29 23:04:42,407 INFO sqlalchemy.engine.base.Engine {}
2016-12-29 23:04:42,415 INFO sqlalchemy.engine.base.Engine SELECT DATABASE()
2016-12-29 23:04:42,415 INFO sqlalchemy.engine.base.Engine {}
2016-12-29 23:04:42,416 INFO sqlalchemy.engine.base.Engine show collation where `Charset` = 'utf8' and `Collation` = 'utf8_bin'
2016-12-29 23:04:42,416 INFO sqlalchemy.engine.base.Engine {}
2016-12-29 23:04:42,421 INFO sqlalchemy.engine.base.Engine SELECT CAST('test plain returns' AS CHAR(60)) AS anon_1
2016-12-29 23:04:42,421 INFO sqlalchemy.engine.base.Engine {}
2016-12-29 23:04:42,423 INFO sqlalchemy.engine.base.Engine SELECT CAST('test unicode returns' AS CHAR(60)) AS anon_1
2016-12-29 23:04:42,424 INFO sqlalchemy.engine.base.Engine {}
2016-12-29 23:04:42,426 INFO sqlalchemy.engine.base.Engine SELECT CAST('test collated returns' AS CHAR CHARACTER SET utf8) COLLATE utf8_bin AS anon_1
2016-12-29 23:04:42,426 INFO sqlalchemy.engine.base.Engine {}
2016-12-29 23:04:42,429 INFO sqlalchemy.engine.base.Engine DESCRIBE `users`
2016-12-29 23:04:42,429 INFO sqlalchemy.engine.base.Engine {}
2016-12-29 23:04:42,434 INFO sqlalchemy.engine.base.Engine DESCRIBE `network_interfaces`
2016-12-29 23:04:42,434 INFO sqlalchemy.engine.base.Engine {}
2016-12-29 23:04:42,438 INFO sqlalchemy.engine.base.Engine DESCRIBE `access_secrets`
2016-12-29 23:04:42,438 INFO sqlalchemy.engine.base.Engine {}
2016-12-29 23:04:42,440 INFO sqlalchemy.engine.base.Engine DESCRIBE `projects`
2016-12-29 23:04:42,441 INFO sqlalchemy.engine.base.Engine {}
2016-12-29 23:04:42,446 INFO sqlalchemy.engine.base.Engine DESCRIBE `variable_association`
2016-12-29 23:04:42,446 INFO sqlalchemy.engine.base.Engine {}
2016-12-29 23:04:42,448 INFO sqlalchemy.engine.base.Engine DESCRIBE `devices`
2016-12-29 23:04:42,449 INFO sqlalchemy.engine.base.Engine {}
2016-12-29 23:04:42,451 INFO sqlalchemy.engine.base.Engine DESCRIBE `variables`
2016-12-29 23:04:42,451 INFO sqlalchemy.engine.base.Engine {}
2016-12-29 23:04:42,456 INFO sqlalchemy.engine.base.Engine DESCRIBE `role_assignment_association`
2016-12-29 23:04:42,457 INFO sqlalchemy.engine.base.Engine {}
2016-12-29 23:04:42,460 INFO sqlalchemy.engine.base.Engine DESCRIBE `labels`
2016-12-29 23:04:42,462 INFO sqlalchemy.engine.base.Engine {}
2016-12-29 23:04:42,465 INFO sqlalchemy.engine.base.Engine DESCRIBE `cells`
2016-12-29 23:04:42,467 INFO sqlalchemy.engine.base.Engine {}
2016-12-29 23:04:42,472 INFO sqlalchemy.engine.base.Engine DESCRIBE `networks`
2016-12-29 23:04:42,474 INFO sqlalchemy.engine.base.Engine {}
2016-12-29 23:04:42,477 INFO sqlalchemy.engine.base.Engine DESCRIBE `principals`
2016-12-29 23:04:42,478 INFO sqlalchemy.engine.base.Engine {}
2016-12-29 23:04:42,484 INFO sqlalchemy.engine.base.Engine DESCRIBE `role_assignments`
2016-12-29 23:04:42,485 INFO sqlalchemy.engine.base.Engine {}
2016-12-29 23:04:42,489 INFO sqlalchemy.engine.base.Engine DESCRIBE `hosts`
2016-12-29 23:04:42,490 INFO sqlalchemy.engine.base.Engine {}
2016-12-29 23:04:42,493 INFO sqlalchemy.engine.base.Engine DESCRIBE `regions`
2016-12-29 23:04:42,494 INFO sqlalchemy.engine.base.Engine {}
2016-12-29 23:04:42,497 INFO sqlalchemy.engine.base.Engine DESCRIBE `network_devices`
2016-12-29 23:04:42,498 INFO sqlalchemy.engine.base.Engine {}
Traceback (most recent call last):
  File "t-roles.py", line 55, in <module>
    cell.role_assignment.add(assignment)
AttributeError: 'Cell' object has no attribute 'role_assignment'