绕过列表理解中的非类型
要在没有值x.competition.name
'competition': [x.competition.name if x.competition.name is not None else '-' for x in a]
情况
AttributeError: 'NoneType' object has no attribute 'name'
的 围绕这个问题？
To work around when there is no value x.competition.name, I tried to use is not None:
'competition': [x.competition.name if x.competition.name is not None else '-' for x in a]
But the error still keeps showing up:
AttributeError: 'NoneType' object has no attribute 'name'
How can I go about getting around this problem?
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评论（3）
听起来您需要测试
x.competition：'竞赛'：[x.competition.name如果x.com.petition不是没有其他' - >It sounds like you need to test
x.competition:'competition': [x.competition.name if x.competition is not None else '-' for x in a]显然没有竞争，所以请
使用
Apparently competition is None, so please replace
using
错误消息说您尝试获得
none.name。这意味着x.competition必须是无，这就是为什么您无法从中获得name属性的原因。相反，尝试使您的条件x.com.petition不是无。The error message is saying that you tried to get
None.name. That meansx.competitionmust beNone, which is why you can't get anameattribute from it. Instead, try making your conditionx.competition is not None.