Question

我正在使用带有openpyxl引擎的ExcelWriter创建新的Excel工作簿。我可以导出副作用创建新工作表的数据框，但是当我尝试添加

时

出现错误的新空白工作簿（“未定义工作簿”）
文本到现有工作簿中的单元格时出现错误（“'Summary_Data'未定义”）

我如何修改下面的代码以 a）添加一个新的空白工作表 b）将文本添加到特定工作表中的特定单元格

尝试混合并匹配来自不同地方的各种代码片段可能使我感到困惑。

    #export various dataframes to excel
    with pd.ExcelWriter(f"data validation for {FNum}_{FName}.xlsx",engine='openpyxl') as writer:

        DWoldfiltered.to_excel(writer,sheet_name="Previous_load")

        #An attempt to create a new blank worksheet which fails
        #worksheet1 = workbook.add_worksheet('Summary_Data')

        #this works as a way of creating a worksheet
        new_summary.to_excel(writer,sheet_name="Summary_Data",startrow=1,startcol=1)
        old_summary.to_excel(writer,sheet_name="Summary_Data",startrow=13,startcol=1)

        #two different attempts to a) reference the new workbook b) add text to specific cells,
        #which both fail
        Summary_Data.cell(0,1).value="Latest load summary"
        Summary_Data.write(0,0,"Latest load summary")

    writer.save()

Answer 1

使用writer.book访问基础的openpyxl工作簿对象，然后使用book.create_sheet()初始化一个新的openpyxl工作表对象：

import pandas as pd
import pandas.util.testing as tm

# Create example dataframe
df = tm.makeDataFrame()

with pd.ExcelWriter("out.xlsx", engine='openpyxl') as writer:
    # Write dataframe to excel worksheet
    df.to_excel(writer, sheet_name="dataframe")

    # Create new empty worksheet
    # Note: `sheet` is a `openpyxl.worksheet.worksheet.Worksheet` object
    book = writer.book
    sheet = book.create_sheet("summary")

    # Write data to worksheet cells
    sheet.cell(1, 1).value = "Amount of dataframe rows:"
    sheet.cell(2, 1).value = df.shape[0]

writer.save()

使用Python，ExcelWriter和openpyxl创建一个空白工作表并将文本添加到该新工作表中

1 个答案: