Couple of things to check.
First of all, I'm not 100% familiar with Python but I know that in many languages, the backslash (\) character in a string is a reserved character and needs to be doubled in order for it to be properly parsed. So, you're one line where you have
DbgServices.LaunchTestedApplication(WinFolder +"C:\Users\User1\Desktop\Teachers.lnk")
Change to
DbgServices.LaunchTestedApplication(WinFolder +"C:\\Users\\User1\\Desktop\\Teachers.lnk")
And see if that helps out.
Secondly, this line
app = Sys.Process("Teachers").Exists
Will actually return an error if the application isn't running. The reason being is that you cannot check the "Exists" property if the object itself doesn't exist. Common error. :)
So... change that line of code to
app = Sys.WaitProcess("Teachers").Exists
So... those are the two obvious problems I see in your code.
One final item that is more of a "style" thing is that you don't really need to have the extra line for checking the Exists property. The DbgServices call you are making returns the process object if it exists and returns an empty stub if it does not. So... You can change your code to simply be.
def test():
WinFolder = Sys.OSInfo.WindowsDirectory
app = DbgServices.LaunchTestedApplication(WinFolder +"C:\\Users\\User1\\Desktop\\Teachers.lnk")
# Checks whether Notepad has started successfully
if app:
Log.Message("Teachers app has been started successfully.")
else:
Log.Message("Teachersapp hasn't been started.")
Make those corrections and see if that helps.
