if mask.any(): 6016 if errors != "ignore": -> 6017 raise KeyError(f"{labels[mask]} not found in axis") 6018 indexer = indexer[~mask] 6019 return self.delete(indexer)

这段代码看起来像是 Pandas 中的一部分，它的作用是在 Pandas 的数据框中删除指定的行或列。在这个代码块中，它首先检查指定的标签是否在数据框的轴上存在，如果不存在，则引发 KeyError 异常；否则，它会返回一个新的数据框，其中已删除了指定的行或列。需要根据上下文来确定代码的确切含义，这段代码片段可能只是更大程序的一部分。

相关问题

KeyError Traceback (most recent call last) Cell In[17], line 1 ----> 1 data = data.drop(['125','125.1'],axis=1) 2 data File D:\anaconda\envs\zuoye\lib\site-packages\pandas\core\frame.py:5268, in DataFrame.drop(self, labels, axis, index, columns, level, inplace, errors) 5120 def drop( 5121 self, 5122 labels: IndexLabel = None, (...) 5129 errors: IgnoreRaise = "raise", 5130 ) -> DataFrame | None: 5131 """ 5132 Drop specified labels from rows or columns. 5133 (...) 5266 weight 1.0 0.8 5267 """ -> 5268 return super().drop( 5269 labels=labels, 5270 axis=axis, 5271 index=index, 5272 columns=columns, 5273 level=level, 5274 inplace=inplace, 5275 errors=errors, 5276 ) File D:\anaconda\envs\zuoye\lib\site-packages\pandas\core\generic.py:4549, in NDFrame.drop(self, labels, axis, index, columns, level, inplace, errors) 4547 for axis, labels in axes.items(): 4548 if labels is not None: -> 4549 obj = obj._drop_axis(labels, axis, level=level, errors=errors) 4551 if inplace: 4552 self._update_inplace(obj) File D:\anaconda\envs\zuoye\lib\site-packages\pandas\core\generic.py:4591, in NDFrame._drop_axis(self, labels, axis, level, errors, only_slice) 4589 new_axis = axis.drop(labels, level=level, errors=errors) 4590 else: -> 4591 new_axis = axis.drop(labels, errors=errors) 4592 indexer = axis.get_indexer(new_axis) 4594 # Case for non-unique axis 4595 else: File D:\anaconda\envs\zuoye\lib\site-packages\pandas\core\indexes\base.py:6696, in Index.drop(self, labels, errors) 6694 if mask.any(): 6695 if errors != "ignore": -> 6696 raise KeyError(f"{list(labels[mask])} not found in axis") 6697 indexer = indexer[~mask] 6698 return self.delete(indexer) KeyError: "['125', '125.1'] not found in axis"

这是一个错误提示，看起来是在使用 Pandas 库中的 DataFrame.drop()方法时发生了错误。根据错误提示信息，是因为要删除的列标签 '125' 和 '125.1' 在数据集中不存在，导致了 KeyError。建议先检查一下数据集中的列标签是否正确，或者使用 DataFrame.columns 属性查看所有列标签。

Main.java:27: error: -> expected List<Double>Result = newArrayList<Double>(); ^

This error message indicates that there is a syntax error on line 27 of the Main.java file, specifically that there is an unexpected symbol (in this case, "->") and the compiler was expecting a different symbol.

The likely cause of this error is a typo or mistake in the code. One possible issue is that the method name "newArrayList" may not be recognized by the compiler, and instead should be written as "new ArrayList<>()". Additionally, there may be missing parentheses or other syntax errors in the line of code.

To resolve this error, carefully review the code on line 27 and check for any syntax errors or typos. Ensure that any method or variable names are spelled correctly and that all necessary symbols (such as parentheses and semicolons) are present in the correct places.