Question

我有一个数据框，其中以日期，销售和预算作为列名。我想删除日期列，但它给了我一个错误KeyError: "['Date'] not found in axis"

下面是我的代码：

df2 = df.copy()   # make a copy of the dataframe object
df2.drop(columns = ['Date'], inplace=True)   # drop the Date columns

所有列的数据类型

Date                           datetime64[ns]
Sales                                 float64
Budget                                float64
PPV                                   float64
SOPPV                                 float64
dtype: object

完整的引用：

KeyError                                  Traceback (most recent call last)
<ipython-input-81-22d4dafeb1cb> in <module>
----> 1 df2 = df.drop(columns = ['Date'], inplace=True)

~/opt/anaconda3/lib/python3.7/site-packages/pandas/core/frame.py in drop(self, labels, axis, index, columns, level, inplace, errors)
   3995             level=level,
   3996             inplace=inplace,
-> 3997             errors=errors,
   3998         )
   3999 

~/opt/anaconda3/lib/python3.7/site-packages/pandas/core/generic.py in drop(self, labels, axis, index, columns, level, inplace, errors)
   3934         for axis, labels in axes.items():
   3935             if labels is not None:
-> 3936                 obj = obj._drop_axis(labels, axis, level=level, errors=errors)
   3937 
   3938         if inplace:

~/opt/anaconda3/lib/python3.7/site-packages/pandas/core/generic.py in _drop_axis(self, labels, axis, level, errors)
   3968                 new_axis = axis.drop(labels, level=level, errors=errors)
   3969             else:
-> 3970                 new_axis = axis.drop(labels, errors=errors)
   3971             result = self.reindex(**{axis_name: new_axis})
   3972 

~/opt/anaconda3/lib/python3.7/site-packages/pandas/core/indexes/base.py in drop(self, labels, errors)
   5016         if mask.any():
   5017             if errors != "ignore":
-> 5018                 raise KeyError(f"{labels[mask]} not found in axis")
   5019             indexer = indexer[~mask]
   5020         return self.delete(indexer)

KeyError: "['Date'] not found in axis"

Answer 1

您可以尝试使用nan df2.dropna()消除所有行，那么您认为可以删除它吗？ df2.drop(['Date'])

Answer 2

我相信您在Date之前/之后还有一个空格。因此，您可以手动编辑列名称，也可以尝试：

df.drop(columns=['Date '],inplace=True)

或

df.drop(columns=[' Date'],inplace=True)

无法删除“日期”列KeyError：在轴中找不到“ ['Date']”

2 个答案: