Problem Formulation
Given a Windows operating system on which you have the Microsoft Outlook email program installed.
How to open Microsoft Outlook using only a function call in your Python script?
Solution: os.startfile(‘outlook’)
The easiest way to open Outlook on Windows using only a short and concise Python One-Liner is to use the os.startfile('outlook')
function call from the os
module.
import os os.startfile("outlook")
This opens Microsoft Outlook on your computer in a separate process:

You can close it by closing Outlook regularly. You cannot close it by terminating the Python application because it’s already terminated. The Outlook application runs in a separate process independent of your Python app.

While working as a researcher in distributed systems, Dr. Christian Mayer found his love for teaching computer science students.
To help students reach higher levels of Python success, he founded the programming education website Finxter.com that has taught exponential skills to millions of coders worldwide. He’s the author of the best-selling programming books Python One-Liners (NoStarch 2020), The Art of Clean Code (NoStarch 2022), and The Book of Dash (NoStarch 2022). Chris also coauthored the Coffee Break Python series of self-published books. He’s a computer science enthusiast, freelancer, and owner of one of the top 10 largest Python blogs worldwide.
His passions are writing, reading, and coding. But his greatest passion is to serve aspiring coders through Finxter and help them to boost their skills. You can join his free email academy here.