Your code will probably need to look for different markers depending on the zone your robot starts in. Whilst you could have different files for each zone, there's also a property on the robot object for this.
R.zone will be equal to the the start zone of the robot, and will be equal to one of the teams.
Here's an example:
import robot R = robot.Robot() if R.zone == robot.TEAM.LEON: print("Do something!") else: print("Do something else!")
You can find the zone block in the Movement section.