Question

我想遍历结果集，清理每个项目，然后追加到列表中。我在这里有问题：

当尝试追加列表时，出现错误，即'AttributeError：'NoneType'对象没有属性'append'。我试图克服if pass，但是我没有工作。有任何想法吗？

以下是输入内容：

I_Details = 
['27Dec2017']
['04Jan2018']
['22,000,000USD(fiat)']
['20,000,000USD']
['China,Japan,UnitedStates']
['ZIL']
['Utility-token']
['No']
[ETH,,]
[40%-MiningRewards,,30%-Company,Team,Agencies,,30%-Early&amp;CommunityContributors]
[(ZIL)]
[ETH,,,'return11.89x']

这是我的尝试：

Campaign_info_1 = list()
for Detail in I_Details:
  Campaign_info = Detail.contents
  Campaign_info = str(Campaign_info)
  if Campaign_info==None or Campaign_info=="": 
    pass 
  Campaign_info_1 = Campaign_info_1.append(Campaign_info) 
  print(Campaign_info)

Answer 1

Campaign_info_1 = Campaign_info_1.append(Campaign_info)必须更改为Campaign_info_1.append(Campaign_info)。 Append会使列表发生变化，无需重新分配并导致错误。

Campaign_info_1 = list()
for Detail in I_Details:
  Campaign_info = Detail.contents
  Campaign_info = str(Campaign_info)
  if Campaign_info==None or Campaign_info=="": 
    pass 
  Campaign_info_1.append(Campaign_info) 
  print(Campaign_info)

附加到带有“'NoneType'对象的列表时，没有属性'附加'错误

1 个答案: