--------------------------------------------------------------------------- KeyError Traceback (most recent call last) Cell In[125], line 1 ----> 1 result4 = result.groupby(['newgroup','price_cut'])['name'].count().reset_index(name='counts') 2 result4 = pd.DataFrame(result4) 3 result4.columns = ['newgroup','price_cut','counts'] File D:\大学\大二下\python\install\Lib\site-packages\pandas\core\groupby\generic.py:1771, in DataFrameGroupBy.__getitem__(self, key) 1764 if isinstance(key, tuple) and len(key) > 1: 1765 # if len == 1, then it becomes a SeriesGroupBy and this is actually 1766 # valid syntax, so don't raise 1767 raise ValueError( 1768 "Cannot subset columns with a tuple with more than one element. " 1769 "Use a list instead." 1770 ) -> 1771 return super().__getitem__(key) File D:\大学\大二下\python\install\Lib\site-packages\pandas\core\base.py:244, in SelectionMixin.__getitem__(self, key) 242 else: 243 if key not in self.obj: --> 244 raise KeyError(f"Column not found: {key}") 245 ndim = self.obj[key].ndim 246 return self._gotitem(key, ndim=ndim) KeyError: 'Column not found: name'

这个错误是因为在 `result` 数据框中没有名为 `name` 的列。请检查一下你的数据框，确保该列名正确。如果你要统计的是商品数量，可以将 `name` 改为 `商品数量` 或者其他适当的列名。修改后的代码应该是这样的：

result4 = result.groupby(['newgroup','price_cut'])['商品数量'].count().reset_index(name='counts')
result4 = pd.DataFrame(result4)
result4.columns = ['newgroup','price_cut','counts']

如果你发现数据框中确实没有 `name` 列，那么你需要检查一下你的代码是否正确读取了数据，或者是否对数据进行了必要的预处理。