python xlsxwriter工作表对象重用

Question

I've written some code that iterates through a flat file. After a certain section is completed reading, I take the data and put it into a spreadsheet. Then, I go back and continue reading the flat file for the next section and write to a new worksheet...and so on and so forth.

When looping through the python code, I create a new worksheet for each section read above. During this looping, I create the new worksheet as such:

worksheet = workbook.add_worksheet(thename)

The problem is that the second time through the loop, python crashes when re-assigning the worksheet object above to a new worksheet. Is there a way to "close the worksheet object", then re-assign it?

FYI: If I can't use the same object name, "worksheet" in this case, the code is going to become tremendously long and messy in order to handle "worksheet1", "worksheet2", "worksheet3", etc... (as you might imagine)

Thank you in advance!

Answer 1

Instead of assigning the variable worksheet to workbook.add_worksheet(thename) , have a list called worksheets . When you normally do worksheet = workbook.add_worksheet(thename) , do worksheets.append(workbook.add_worksheet(thename)) . Then access your latest worksheet with worksheets[-1] .

Answer 2

The problem is that the second time through the loop, python crashes when re-assigning the worksheet object above to a new worksheet.

Python shouldn't crash when running an XlsxWriter program. If it does you should submit a bug report.

You can loop over worksheets in a few different ways. For example by creating the worksheet in the loop:

import xlsxwriter

workbook = xlsxwriter.Workbook('test.xlsx')

for _ in range(4):

    worksheet = workbook.add_worksheet()

    worksheet.write('A1', 'Hello')

workbook.close()

Or by creating the worksheets outside the loop and then using the worksheets() method to loop over them:

import xlsxwriter

workbook = xlsxwriter.Workbook('test.xlsx')

workbook.add_worksheet()
workbook.add_worksheet()
workbook.add_worksheet()
workbook.add_worksheet()

for worksheet in workbook.worksheets():
    worksheet.write('A1', 'Hello')

workbook.close()

You could also store the worksheets in a list and iterate over that. That is essentially with the worksheets() method is doing.