Python 使用字典对列表排序

我有以下数据列表：

[['0', 'r1', 0.02, '-115.047611580259'], ['-', 'r1', 0.02, '-115.047523465090'], ['+', 'r1', 0.02, '-115.047530021958'], ['-', 'r2', 0.02, '-115.047482517212'], ['+', 'r2', 0.02, '-115.047488665041'], ['-', 'r3', 0.02, '-115.047537136035'], ['+', 'r3', 0.02, '-115.047540343182'], ['-', 'r4', 0.02, '-115.047536709065'], ['+', 'r4', 0.02, '-115.047539744629'], ['-', 'r5', 0.02, '-115.047536709065'], ['+', 'r5', 0.02, '-115.047539744630'], ['-', 'T1', 0.017453292519943295, '-115.047582049644'], ['+', 'T1', 0.017453292519943295, '-115.047580299567'], ['-', 'T2', 0.017453292519943295, '-115.047565855131'], ['+', 'T2', 0.017453292519943295, '-115.047566778954'], ['-', 'T3', 0.017453292519943295, '-115.047566430596'], ['+', 'T3', 0.017453292519943295, '-115.047566580788'], ['-', 'T4', 0.017453292519943295, '-115.047566430596'], ['+', 'T4', 0.017453292519943295, '-115.047566580788'], ['-', 'T5', 0.017453292519943295, '-115.047582679863'], ['+', 'T5', 0.017453292519943295, '-115.047582679863'], ['-', 'T6', 0.017453292519943295, '-115.047581038699'], ['+', 'T6', 0.017453292519943295, '-115.047580181415'], ['-', 'T7', 0.017453292519943295, '-115.047580181415'], ['+', 'T7', 0.017453292519943295, '-115.047581038699'], ['t', 'tes', 0.017453292519943295, '-115.047611580259']]

我正在尝试对值进行排序，因此我创建了字典：

index_sort = {'r1':1, 'r2':2, 'T1':3, 'r3':4, 'T2':5, 'T3':6, 'r4':7, 'T4':8, 'T5':9, 'r5':10, 'T6':11, 'T7':12}
Eall_sorted = sorted(Eall, key = lambda e: index_sort[e[1]])

问题是我得到了错误的回报：

Eall_sorted = sorted(Eall, key = lambda e: index_sort[e[1]])
KeyError: 'tes'

---

有人能详细说明我的代码出了什么问题吗？

你忘了在字典中映射

tes

，在索引排序中添加

'tes'：13

，它就工作了

在这一行中

index_sort = {'r1':1, 'r2':2, 'T1':3, 'r3':4, 'T2':5, 'T3':6, 'r4':7, 'T4':8, 'T5':9, 'r5':10, 'T6':11, 'T7':12}

您忘了添加“tes”

你可以用

index_sort = {'r1':1, 'r2':2, 'T1':3, 'r3':4, 'T2':5, 'T3':6, 'r4':7, 'T4':8, 'T5':9, 'r5':10, 'T6':11, 'T7':12, 'tes':13}

---

您将

tes

从

index\u sort

中删除。这完全有道理。我没有注意到。谢谢！