ExcelWriter Openpyxl正在创建一个必须恢复的损坏文件

Question

以下代码成功创建了各个文件，但最后一个文件必须在恢复模式下打开。我试着调查所有可能的问题，但运气不佳

问题：根据以下代码，是否有任何原因导致大多数文件创建正确，而最后一个文件损坏

for key, value in sorted(mdm_sheet_to_df_map.items()):           
    mdm_group = value.groupby('MDM')
    for MDM, group_df in mdm_group:
        attachment_mdm = attachment_path_mdm / f'{MDM}' / f'Q221 New Accounts - {MDM} - {today_string1}.xlsx'
        attachment1_mdm = os.makedirs(os.path.dirname(attachment_mdm), exist_ok=True)
        try:
            writer = ExcelWriter(attachment_mdm, engine = 'openpyxl', mode="a")
        except FileNotFoundError:
            writer = ExcelWriter(attachment_mdm, engine = 'openpyxl')
        group_df.to_excel(writer, sheet_name =f'{key}', index=False)
        writer.save()
    writer.close()

编辑：运行脚本时，Python中不会出现异常/错误。当我尝试打开正在恢复的最后一个文件时，发现了该问题。所有其他文件正常打开

Answer 1

我现在也面临同样的问题。对我来说，解决方案是将编写器置于“with”状态，而不是使用.save和.close方法

for key, value in sorted(mdm_sheet_to_df_map.items()):           
    mdm_group = value.groupby('MDM')
    for MDM, group_df in mdm_group:
        attachment_mdm = attachment_path_mdm / f'{MDM}' / f'Q221 New Accounts - {MDM} - {today_string1}.xlsx'
        attachment1_mdm = os.makedirs(os.path.dirname(attachment_mdm), exist_ok=True)
        with pd.ExcelWriter(attachment_mdm, engine = 'openpyxl') as writer:
            group_df.to_excel(writer, sheet_name =f'{key}', index=False)
        

仍然不确定如何处理FileNotFound。但我认为这应该有助于走这条路