如何在现有 Excel sheet 下方写入数据帧而不丢失数据透视表 table sheet 中 excel 的切片器？

Question

我正在使用 openpyxl 模块将 pandas 数据框附加到现有 excel sheet 下方。但问题是我的 excel sheet 在 pivot table 中的切片器在执行此任务时被破坏了。我尝试了很多方法来找到它的解决方案，但我认为openpyxl没有办法避免这种情况。

我正在使用以下方法通过 openpyxl-

实现它

#HELPER FUNCTION TO APPEND DATAFRAME BELOW EXCEL FILE
def append_df_to_excel(filename, df, sheet_name='Sheet1', startrow=None,
                       truncate_sheet=False,
                       **to_excel_kwargs):
    """
    Append a DataFrame [df] to existing Excel file [filename]
    into [sheet_name] Sheet.
    If [filename] doesn't exist, then this function will create it.

    Parameters:
      filename : File path or existing ExcelWriter
                 (Example: '/path/to/file.xlsx')
      df : dataframe to save to workbook
      sheet_name : Name of sheet which will contain DataFrame.
                   (default: 'Sheet1')
      startrow : upper left cell row to dump data frame.
                 Per default (startrow=None) calculate the last row
                 in the existing DF and write to the next row...
      truncate_sheet : truncate (remove and recreate) [sheet_name]
                       before writing DataFrame to Excel file
      to_excel_kwargs : arguments which will be passed to `DataFrame.to_excel()`
                        [can be dictionary]

    Returns: None
    """
    from openpyxl import load_workbook

    import pandas as pd

    # ignore [engine] parameter if it was passed
    if 'engine' in to_excel_kwargs:
        to_excel_kwargs.pop('engine')

    writer = pd.ExcelWriter(filename, engine='openpyxl', index=False)

    # Python 2.x: define [FileNotFoundError] exception if it doesn't exist
    try:
        FileNotFoundError
    except NameError:
        FileNotFoundError = IOError


    try:
        # try to open an existing workbook
        writer.book = load_workbook(filename,data_only=True)

        # get the last row in the existing Excel sheet
        # if it was not specified explicitly
        if startrow is None and sheet_name in writer.book.sheetnames:
            startrow = writer.book[sheet_name].max_row

        # truncate sheet
        if truncate_sheet and sheet_name in writer.book.sheetnames:
            # index of [sheet_name] sheet
            idx = writer.book.sheetnames.index(sheet_name)
            # remove [sheet_name]
            writer.book.remove(writer.book.worksheets[idx])
            # create an empty sheet [sheet_name] using old index
            writer.book.create_sheet(sheet_name, idx)

        # copy existing sheets
        writer.sheets = {ws.title:ws for ws in writer.book.worksheets}
    except FileNotFoundError:
        # file does not exist yet, we will create it
        pass

    if startrow is None:
        startrow = 1

    # write out the new sheet
    df.to_excel(writer, sheet_name, startrow=startrow, **to_excel_kwargs)

    # save the workbook
    writer.save()

我看到可以使用 xlwings 和 win32com 来执行此操作，但不确定如何使用这些库执行此操作。我想问一下如何在现有 excel 文件下方附加数据框而不丢失我 excel 的数据透视表 sheet 中的切片器我们可以在不使用 openpyxl 的情况下执行此操作的方法，因为我认为 openpyxl 无法使用。我收到 openpyxl

的警告

C:\Users\Desktop\PycharmProjects\MyProject\venv\lib\site-packages\openpyxl\worksheet\_reader.py:292: UserWarning: Slicer List extension is not supported and will be removed
      warn(msg)

Answer 1

我已经尝试了所有可能的解决方案，最后我可以说使用 openpyxl 是不可能的。除了 xlwings，我们可以使用 openpyxl library.xlwings 库处理速度非常快。我们可以在 code.By 的帮助下将数据帧附加到 excel sheet 下面，这样切片器值就不会丢失或删除。

import xlwings as xw
import pandas as pd
df = pd.read_excel("File_to_append.xlsx")
wb = xw.Book(r"Existing_Excel.xlsx")
ws = wb.sheets('Sheet1')  #Name of sheet where to append df
ws.cells(cell_row_number,cell_column_number).options(index=False, header=False).value = df
#Here cell_row_number and cell_column_number are integer valuesof row number and column number to append data

希望我清楚。这是我找到的最佳解决方案

如何在现有 Excel sheet 下方写入数据帧而不丢失数据透视表 table sheet 中 excel 的切片器？

How to write dataframe below an existing Excel sheet without losing slicer of excel in pivot table sheet?

python

excel

win32com

pandas

xlwings