Keyerror: "none of [[x,y,z]] are in the [index]"

Question

我不明白这个错误是从哪里来的。它说 none 个值在索引中。但是我仔细检查了拼写、语法，所有内容都与我的同事用于类似分析的 sheet 完全相同。

我是 pandas/python 分析方面的新手，如果您能立即看到答案，请告诉我您是如何找到答案的？我想学习。谢谢！

当我注释掉我在这里显示的最后一行时，一切都会运行 ss_eventtotals_plot.loc[bucket_order].plot(kind='bar')

ss=pd.read_csv('cars_cars_saved_search_data.csv',parse_dates=[0])

ss_eventtotals=ss

ss_eventtotals.loc[ss_eventtotals.index.isin(['saved search|open|srp','saved search|open|nav',
                                              'save search|create start']),'Bucket'] = 'create start' 
ss_eventtotals.loc[ss_eventtotals.index.isin(['saved search|create|srp','saved search|create|nav',
                                              'save search|create success']),'Bucket'] = 'create complete'
ss_eventtotals.loc[ss_eventtotals.index.isin(['save search|create cancel']),'Bucket'] = 'create cancel - Web' 
ss_eventtotals.loc[ss_eventtotals.index.isin(['saved search|delete']),'Bucket'] = 'delete start' 
ss_eventtotals.loc[ss_eventtotals.index.isin(['saved search|delete cancel']),'Bucket'] = 'delete cancel'
ss_eventtotals.loc[ss_eventtotals.index.isin(['saved search|delete success',
                                              'save search|delete success']),'Bucket'] = 'delete complete'
ss_eventtotals.loc[ss_eventtotals.index.isin(['saved search|edit','save search|edit start']),'Bucket'] = 'edit start'
ss_eventtotals.loc[ss_eventtotals.index.isin(['saved search|edit cancel',
                                              'save search|edit cancel']),'Bucket'] = 'edit cancel'
ss_eventtotals.loc[ss_eventtotals.index.isin(['saved search|edit save',
                                              'save search|edit success']),'Bucket'] = 'edit complete'
ss_eventtotals.loc[ss_eventtotals.index.isin(['saved search|view']),'Bucket'] = 'view - App' 
ss_eventtotals.loc[ss_eventtotals.index.isin(['save search|add cancel']),'Bucket'] = 'add cancel - Web' 
ss_eventtotals.loc[ss_eventtotals.index.isin(['saved search|run search']),'Bucket'] = 'run search - App' 
ss_eventtotals.loc[ss_eventtotals.index.isin(['saved search|view']),'Bucket'] = 'search view - App'

ss_eventtotals2=ss_eventtotals.groupby('Bucket')
ss_eventtotals2=ss_eventtotals2.sum()

ss_eventtotals_plot=ss_eventtotals2.loc[ss_eventtotals2.index.isin(['create start','create complete','delete start','delete complete','edit start','edit complete','view - App','run search - App'])]
bucket_order = ['create start','create complete','delete start','delete complete','edit start','edit complete','view - App','run search - App']
ss_eventtotals_plot.loc[bucket_order].plot(kind='bar')

我希望 'buckets' 按照我列出的顺序绘制

再次强调，我是新手，我知道这可能只是我的知识空白，非常感谢任何帮助。

如果我需要 post 更多代码，请告诉我。

Answer 1

很可能某个地方的拼写错误弄乱了您的索引键，或者您在 groupby().sum() 操作期间丢失了一些。

尝试：

missing_keys = [key for key in bucket_order if key not in ss_eventtotals_plot.index]
missing_keys

找出丢失的键。

一般你应该使用Pandas 'reindex' 函数重新排序索引，它会为丢失的键创建新索引并用'NaN' 填充它们。所以最后一段看起来是：

bucket_order = ['create start','create complete','delete start','delete complete','edit start','edit complete','view - App','run search - App']
ss_eventtotals_plot=ss_eventtotals2.reindex([bucket_order])
ss_eventtotals_plot.loc[bucket_order].plot(kind='bar')

Keyerror: "none of [[x,y,z]] are in the [index]"

Keyerror: "none of [[x,y,z]] are in the [index]"

python

python-3.x

pandas

keyerror

jupyter-notebook