Help in Python Needed

Hi Guys, I currently need to complete a project assignment for a soccer robot. The robots needs to be able to move towards a ball and push it into a goal while avoiding walls and obstacles. I have code for the navigation and drive system component of the robot, however don't know how to integrate those two systems to make the Navigation system for the robot to work together. The Python codes for all the robot systems are already made but I am facing difficulties in how to integrate these codes into one so that the robot can work properly. Its a not a big task, someone with experties in Python can help me flexibly. Only serious persons contact please.