将不同数据框中的数据添加到excel

Question

目前我想做的是从数据框列表中获取数据，并将它们作为自己的选项卡添加到现有的 excel 文件中。

为了测试这一点，我用一个数据框进行了尝试。没有错误，但是当我打开excel文件时，它说它已损坏。我继续恢复信息，但我宁愿不必每次都这样做。我相信如果我遍历我的列表来实现这一点，它会失败。

    import os,glob
    import pandas as pd
    from openpyxl import load_workbook
     
    master_file='combined_csv.xlsx'
    #set the directory
    os.chdir(r'C:\Users\test') 
    #set the type of file
    extension = 'csv' 
    #take all files with the csv extension into an array
    all_filenames = [i for i in glob.glob('*.{}'.format(extension))]
    col_to_keep=["Name",
                 "Area (ft)",
                 "Length (ft)",
                 "Center (ft)",
                 "ID",
                 "SyncID"]
        
    combine_csv = pd.concat([pd.read_csv(f, delimiter=';', usecols=col_to_keep) for f in all_filenames])
    combine_csv.to_excel(master_file, index=False,sheet_name='All')
    # Defining the path which excel needs to be created
    # There must be a pre-existing excel sheet which can be updated
    FilePath = r'C:\Users\test'
     
    # Generating workbook
    ExcelWorkbook = load_workbook(FilePath)
     
    # Generating the writer engine
    writer = pd.ExcelWriter(FilePath, engine = 'openpyxl')
     
    # Assigning the workbook to the writer engine
    writer.book = ExcelWorkbook
     
     
    # Creating first dataframe
    drip_file = pd.read_csv(all_filenames[0], delimiter = ';', usecols=col_to_keep)
    SimpleDataFrame1=pd.DataFrame(data=drip_file)
    print(SimpleDataFrame1)
     
     
    # Adding the DataFrames to the excel as a new sheet
    SimpleDataFrame1.to_excel(writer, sheet_name = 'Drip')
    
    writer.save()
    writer.close()

它似乎运行良好，没有错误，但是当我打开 excel 文件时，我得到如下所示的错误。

有没有人发现代码有问题会导致 excel 给我这个错误？

提前谢谢你

Answer 1

您的代码知道它的打印数据到同一个工作簿，但是要使用 writer，您还需要告诉 python 工作表名称是什么：

book = load_workbook(your_destination_file)
writer = pd.ExcelWriter(your_destination_file, engine='openpyxl')
writer.book = book
writer.sheets = dict((ws.title, ws) for ws in book.worksheets)  # tells 
pandas/python what the sheet names are

Your_dataframe.to_excel(writer, sheet_name=DesiredSheetname)

writer.save()

此外，如果您在文档中有透视图、图片、外部连接，它们将被删除，并且可能是导致损坏的原因。