问PythonNameError:未定义名称'discovery‘

EN

def zabbix_discovery(pingdom_data):
        discovery = []
        for k,v in data["recipes"].items():
                discovery.append(
                         {"{#NAME}": str(v['name'])}
                         )
cmd_args = [
        'zabbix_sender',
        '-z', config.get('ZABBIX', 'server'),
        '-p', config.get('ZABBIX', 'port'),
        '-s', config.get('ZABBIX', 'host'),
        '-k', config.get('ZABBIX', 'key1'),
        '-o', "'{ \"data\": " + discovery + " }'"
        ]
zabbix_trapper(cmd_args)

Traceback (most recent call last):
  File "txncheck_backup.py", line 52, in <module>
    '-o', "'{ \"data\": " + discovery + " }'"
NameError: name 'discovery' is not defined