我的代碼有以下行如何排序在Python
get_alarm_list = conn.query_alarms(query.filter_expr,
query.orderb)
print "type is:", type(get_alarm_list)
for alarm in get_alarm_list:
if alarm.severity == 'critical':
alarm.severity = 2
elif alarm.severity == 'moderate':
alarm.severity = 1
else:
alarm.severity = 0
alarm_list = sorted(get_alarm_list),
key=lambda a: a.severity,
reverse=True)
return [alarms.Alarm.from_db_model(alarm)
for alarm in alarm_list]
輸出:
type is <type 'generator'>
在列表中的對象是:
for alarm in get_alarm_list:
print alarm
Output:
<aodh.storage.models.Alarm object at 0x7fa4c0cb1c50>
<aodh.storage.models.Alarm object at 0x7fa4c0cb17d0>
<aodh.storage.models.Alarm object at 0x7fa4c0d86f10>
<aodh.storage.models.Alarm object at 0x7fa4ca372110>
<aodh.storage.models.Alarm object at 0x7fa4ca372190>
<aodh.storage.models.Alarm object at 0x7fa4c0c55d90>
而且每個警報由以下數據
{'alarm_actions': [u'log://'], 'ok_actions': [], 'description': u'instance running hot', 'state': u'insufficient data', 'fields': ['alarm_actions', 'ok_actions', 'severity', 'timestamp', 'description', 'time_constraints', 'enabled', 'state_timestamp', 'rule', 'alarm_id', 'state', 'insufficient_data_actions', 'repeat_actions', 'user_id', 'project_id', 'type', 'name'], 'repeat_actions': False, 'enabled': True, 'state_timestamp': datetime.datetime(2016, 5, 27, 6, 41, 5, 987428), 'rule': {u'meter_name': u'cpu_util', u'evaluation_periods': 3, u'period': 600, u'statistic': u'avg', u'threshold': 70.0, u'query': [], u'comparison_operator': u'gt', u'exclude_outliers': False}, 'name': u'ddd', 'alarm_id': u'f5045ed5-5c53-4a6e-be53-23d3368f40c6', 'time_constraints': [], 'insufficient_data_actions': [], 'timestamp': datetime.datetime(2016, 5, 27, 6, 41, 5, 987428), 'user_id': u'9a65b258b5a24e74ac5feae2f6c54229', 'project_id': u'28d1c27e782c4448bf53da00f49d3e1b', 'type': u'threshold', 'severity': 2}
如何迭代發生器?
alarm_list = sorted(get_alarm_list,
key=lambda a: a.severity,
reverse=True)
但是這裏的alarm_list
是空的。我如何使用發生器的排序功能get_alarm_list
'sorted'在發電機上工作。它會返回一個排序列表。你能發佈足夠的代碼來重現你的問題嗎? – khelwood
@khelwood我編輯了我的問題,併發布了更多代碼作爲您的建議。 – NSP
在版本2中,您可以使用'for index,枚舉值(get_alarm_list)'並將'get_alarm_list'更新爲'get_alarm_list [index]',因此您不需要創建分列表... –