Python 熊猫的关键错误

我想找出一个时间序列的例子

我在这段代码中有一个错误：

dta.index = pd.Index(sm.tsa.datetools.dates_from_range('1700', '2008'))
del dta["YEAR"]

错误如下所示：

KeyError                                  Traceback (most recent call last)
C:\ProgramData\Anaconda3\lib\site-packages\pandas\indexes\base.py in 
get_loc(self, key, method, tolerance)
   2133             try:
-> 2134                 return self._engine.get_loc(key)
   2135             except KeyError:

pandas\index.pyx in pandas.index.IndexEngine.get_loc (pandas\index.c:4433)()

pandas\index.pyx in pandas.index.IndexEngine.get_loc (pandas\index.c:4279)()

pandas\src\hashtable_class_helper.pxi in 
pandas.hashtable.PyObjectHashTable.get_item (pandas\hashtable.c:13742)()

pandas\src\hashtable_class_helper.pxi in 
pandas.hashtable.PyObjectHashTable.get_item (pandas\hashtable.c:13696)()

KeyError: 'YEAR'

During handling of the above exception, another exception occurred:

KeyError                                  Traceback (most recent call last)
<ipython-input-22-5287e8e754f5> in <module>()
      1 dta.index = pd.Index(sm.tsa.datetools.dates_from_range('1700', '2008'))
----> 2 del dta["YEAR"]

C:\ProgramData\Anaconda3\lib\site-packages\pandas\core\generic.py in 
__delitem__(self, key)
   1640             # there was no match, this call should raise the appropriate
   1641             # exception:
-> 1642             self._data.delete(key)
   1643 
   1644         # delete from the caches

C:\ProgramData\Anaconda3\lib\site-packages\pandas\core\internals.py in 
delete(self, item)
   3600         Delete selected item (items if non-unique) in-place.
   3601         """
-> 3602         indexer = self.items.get_loc(item)
   3603 
   3604         is_deleted = np.zeros(self.shape[0], dtype=np.bool_)

C:\ProgramData\Anaconda3\lib\site-packages\pandas\indexes\base.py in 
get_loc(self, key, method, tolerance)
   2134                 return self._engine.get_loc(key)
   2135             except KeyError:
-> 2136                 return 
self._engine.get_loc(self._maybe_cast_indexer(key))
   2137 
   2138         indexer = self.get_indexer([key], method=method, tolerance=tolerance)

pandas\index.pyx in pandas.index.IndexEngine.get_loc (pandas\index.c:4433)()

pandas\index.pyx in pandas.index.IndexEngine.get_loc (pandas\index.c:4279)()

pandas\src\hashtable_class_helper.pxi in 
pandas.hashtable.PyObjectHashTable.get_item (pandas\hashtable.c:13742)()

pandas\src\hashtable_class_helper.pxi in 
pandas.hashtable.PyObjectHashTable.get_item (pandas\hashtable.c:13696)()

KeyError: 'YEAR'

---

似乎您需要通过以下方式删除列

Date

：

或：

或者可能：

del dta["Date"]

---

似乎您需要通过以下方式删除列

Date

：

或：

或者可能：

del dta["Date"]

---

错误很明显您没有名为

'YEAR'

的列，如果执行

打印（dta.columns.tolist（））

操作，您将看到实际的列名错误很明显您没有名为

'YEAR'

的列，如果执行

打印（dta.columns.tolist（））

操作，您将看到实际的列名

dta = dta.drop('Date', axis=1)

del dta["Date"]