Python 使用 Pandas 和 Openpyxl 更新现有的 Excel 文件会引发 AttributeError：'OpenpyxlWriter' 对象的属性 'book' 没有设置器

我一直在try 更新现有Excel中的数据--过程如下:

1)从Excel中读取数据

2)使用Pandas 将其与新数据相结合

3)将合并后的数据帧保存到原始文件中

它一直返回以下错误，我认为这是因为在读取相同的文件时写入(更新)了该文件:

AttributeError                            Traceback (most recent call last)
Cell In[14], line 19
     18 with pd.ExcelWriter(file_path, engine='openpyxl') as writer:
---> 19     writer.book = book
     20     writer.sheets = {ws.title: ws for ws in book.worksheets}

AttributeError: property 'book' of 'OpenpyxlWriter' object has no setter

我的代码如下--运行它还会擦除原始文件的数据，并使该文件不可用:

# Load the Excel file
file_path = 'original.xlsx'
update = 'update.xlsx'

# Open the file in read-only mode to prevent any locks
with open(file_path, "rb") as file:
    book = load_workbook(file)

# Combine original with update file
for sheet_name in ['sheet1', ...]:
    df1 = pd.read_excel(file_path, sheet_name = sheet_name)
    df2 = pd.read_excel(update, sheet_name = sheet_name)
    df2 = df2.iloc[::-1]
    df1 = pd.concat([df1, df2], ignore_index = True)
    df1 = df1.drop_duplicates(subset = 'column1', keep = 'last')

    # Write combined data to the sheet
    with pd.ExcelWriter(file_path, engine='openpyxl') as writer:
        writer.book = book
        writer.sheets = {ws.title: ws for ws in book.worksheets}
        
        # Set the sheet as the active sheet
        book.active = book.sheetnames.index(sheet_name)
        
        df1.to_excel(writer, sheet_name = sheet_name, index = False, startrow = 1)

    print(f"Successfully updated '{sheet_name}' sheet in '{file_path}'.")