How to use Worksheet.ResetAllPageBreaks in the xlwings API way

The Worksheet.ResetAllPageBreaks method in Excel’s object model is a useful tool for managing print layout, specifically by removing all manually inserted page breaks on a specified worksheet. When preparing a document for printing, users often insert horizontal or vertical page breaks to control where pages end. Over time, a sheet can accumulate many such breaks, which may no longer be needed or could interfere with updated print settings. The ResetAllPageBreaks method clears all these user-defined page breaks at once, reverting the sheet to automatic page breaking based on current margins, paper size, and scaling. This is particularly helpful when you want to start fresh with page layout adjustments or ensure print output follows default pagination.

In xlwings, the API closely mirrors the Excel object model. To call this method, you access it through a Worksheet object. The syntax is straightforward as it does not take any parameters. The general format is:

worksheet.api.ResetAllPageBreaks()

Here, worksheet refers to an xlwings Worksheet object. The .api property provides direct access to the underlying Excel object model, allowing you to use native Excel methods like ResetAllPageBreaks. Since it is a method, you invoke it with parentheses. It affects only the worksheet it is called on and does not return a value.

Consider a scenario where you have an Excel workbook for monthly reports. After several rounds of manual page break adjustments, you want to clear them all to apply a new uniform print setup. The following xlwings code example demonstrates this:

import xlwings as xw

# Connect to the active Excel application or start a new one
app = xw.apps.active

# Open a specific workbook (adjust the path as needed)
wb = app.books.open('Monthly_Report.xlsx')

# Access the desired worksheet
ws = wb.sheets['DataSheet']

# Reset all manually inserted page breaks on this worksheet
ws.api.ResetAllPageBreaks()

# Save the workbook to persist changes
wb.save()

# Optionally, close the workbook and app
wb.close()
app.quit()