Automate OpenOffice Writer with Python-UNO: Step‑by‑Step Guide

Introduction

OpenOffice is a free, open‑source office suite that offers an API allowing developers to use it from various programming languages. Python‑UNO enables Python scripts to control OpenOffice without additional installation, though the bundled Python version (2.3.5) may lack newer features.

Connecting to OpenOffice.org

First ensure OpenOffice is running in listening mode by launching it with a special command‑line argument. Then import the uno module in Python and create a local component context. Use the service manager to obtain the UnoUrlResolver service and resolve the

uno:socket,host=localhost,port=2002;StarOffice.ComponentContext

URL to get a remote component context.

Using the Desktop Service

Obtain the com.sun.star.frame.Desktop service via createInstanceWithContext. With the desktop service you can access the current document using getCurrentComponent. Create a text cursor, insert strings, line breaks, and tabs. Font attributes such as CharHeight can be read and modified to change text size.

Working with Tables

To insert a table, open a new Writer document, then create a table with the desired number of rows and columns (e.g., 6 rows and 2 columns for five countries and their populations). Insert the table into the document, then fill each cell by addressing it with its column‑row name (e.g., "A1").

Conclusion

OpenOffice.org provides a powerful, language‑agnostic API, and Python‑UNO makes it easy to script document creation and manipulation. This guide covered connecting to OpenOffice, inserting and formatting text, and creating tables. The API offers many more capabilities for automating Writer and other OpenOffice components.