How to use Worksheet.PrintPreview in the xlwings API way

The PrintPreview method in the Excel object model, accessible via the Worksheet object in xlwings, is a powerful feature for generating a print preview of a worksheet without physically printing it. This allows users to visually inspect the layout, page breaks, headers, footers, and overall formatting before committing to a print job, ensuring that the output matches expectations and conserving resources by avoiding unnecessary prints. In xlwings, this functionality is exposed through the api property, which provides direct access to the underlying Excel object model, enabling precise control over the print preview process.

Functionality:
The primary function of the PrintPreview method is to display the print preview dialog for the specified worksheet. This dialog shows exactly how the worksheet will appear when printed, based on the current page setup settings such as margins, orientation, scaling, and print area. It is an interactive preview, allowing users to navigate through pages, zoom in and out, and access print settings directly from the preview window. This is particularly useful for debugging complex reports or dashboards to ensure all elements are correctly positioned and formatted for hard copy.

Syntax:
In xlwings, the method is called via the Excel object model’s API. The syntax is:

worksheet.api.PrintPreview()

This method does not take any parameters. It is invoked directly on the worksheet object’s api property, which represents the native Excel Worksheet COM object. The call immediately opens the print preview window for that specific worksheet.

Code Example:
Below is a practical example demonstrating how to use the PrintPreview method in xlwings. This script assumes you have an Excel workbook open or will open one, select a worksheet, and then trigger the print preview.

import xlwings as xw

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

# Open a workbook (replace with your file path)
wb = app.books.open(r'C:\Path\To\Your\Workbook.xlsx')

# Access a specific worksheet by name or index
ws = wb.sheets['Sheet1'] # or wb.sheets[0]

# Display the print preview for the worksheet
ws.api.PrintPreview()

# Note: The script will pause while the print preview window is open.
# The user must manually close the preview to continue execution.

# To close the workbook without saving (optional)
wb.close()