我有一个开放的工作簿，数据被写入其中。如何添加工作表以写入数据框的内容？
import xlsxwriter
import pandas as pd
workbook = xlsxwriter.Workbook('test.xlsx')
sheet1 = workbook.add_worksheet(name='sheet1')
sheet1.write(0, 0, 'test')
df = pd.DataFrame({'a': [1, 2, 3, 4], 'b': ['aa', 'bb', 'cc', 'dd']})
# write df somehow to next sheet. I usually use df.to_excel(filename, engine='xlsxwriter'), but this will create a new file
workbook.close()
正如您在注释中指出的那样，您无法将XlsxWriter工作簿对象传递给pandas to_excel()。
解决方法是，可以创建一个带有空数据框的工作表，然后访问其下的XlsxWriter工作簿和工作表对象。然后，您可以通过pandas界面添加其他工作表。
这是一个基于您的代码的小型工作示例：
import pandas as pd
# Create an pandas excel writer based on xlsxwriter.
writer = pd.ExcelWriter('test.xlsx', engine='xlsxwriter')
# Create a worksheet with an empty dataframe so the sheet is empty.
df = pd.DataFrame()
df.to_excel(writer, sheet_name='Sheet1')
# Access the underlying xlsxwriter worksheet and write to it.
workbook = writer.book
worksheet = writer.sheets['Sheet1']
worksheet.write(0, 0, 'test')
# Create another dataframe with data.
df = pd.DataFrame({'a': [1, 2, 3, 4],
'b': ['aa', 'bb', 'cc', 'dd']})
# Write the dataframe to another worksheet.
df.to_excel(writer, sheet_name='Sheet2')
writer.save()
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