How can I launch an instance of an application using Python?

Question

I am creating a Python script where it does a bunch of tasks and one of those tasks is to launch and open an instance of Excel. What is the ideal way of accomplishing that i

Answer 1

I like os.startfile("path to file") as it opens the file as if you've double clicked to open.

I found that with os.system("start excel filename") it opened it like a file opened from the web and you had to enable editing.