请各位看下解决办法——提取EXCEL中的列数据

提取EXCEL中的列数据，列名报错，不清楚究竟哪里错误，请指教
源代码：

import pandas as pd
df_list=pd.read_excel("采购表.xlsx",sheet_name=None)
df_all=pd.concat(df_list.values())
df_names=pd.DataFrame({"物品":list(df_all["采购物品"].unique())})
df_names.to_excel("采购表-物品列表.xlsx", index=False)

报错：

C:\Users\Administrator\Desktop\test\Scripts\python.exe C:/Users/Administrator/Desktop/test/yuyue.py
Traceback (most recent call last):
  File "C:\Users\Administrator\Desktop\test\lib\site-packages\pandas\core\indexes\base.py", line 3361, in get_loc
    return self._engine.get_loc(casted_key)
  File "pandas\_libs\index.pyx", line 76, in pandas._libs.index.IndexEngine.get_loc
  File "pandas\_libs\index.pyx", line 108, in pandas._libs.index.IndexEngine.get_loc
  File "pandas\_libs\hashtable_class_helper.pxi", line 5198, in pandas._libs.hashtable.PyObjectHashTable.get_item
  File "pandas\_libs\hashtable_class_helper.pxi", line 5206, in pandas._libs.hashtable.PyObjectHashTable.get_item
KeyError: '采购物品'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "C:\Users\Administrator\Desktop\test\yuyue.py", line 4, in <module>
    df_names=pd.DataFrame({"物品":list(df_all["采购物品"].unique())})
  File "C:\Users\Administrator\Desktop\test\lib\site-packages\pandas\core\frame.py", line 3458, in __getitem__
    indexer = self.columns.get_loc(key)
  File "C:\Users\Administrator\Desktop\test\lib\site-packages\pandas\core\indexes\base.py", line 3363, in get_loc
    raise KeyError(key) from err
KeyError: '采购物品'

进程已结束,退出代码1

按你的excel，这样试试

df_list = pd.read_excel("采购表.xlsx",sheet_name=None)
print(df_list)
df_all=pd.concat(df_list.values())
df_names=pd.DataFrame({"物品":list(df_all["物品"].unique())})
df_names.to_excel("采购表-物品列表.xlsx", index=False)

先看 df_all 有啥显示出来

import pandas as pd
df_list=pd.read_excel("采购表.xlsx",sheet_name=None)
print(df_list.head())
df_all=pd.concat(df_list.values())
print(df_all)

先捋一下你的需求
你要读excel的两张sheet 还是一张？
excel都没有 采购物品 这一列 。

你的具体需求再描述一下。