import random

class Roster:
    """Needs a roster, place to load it from, a file locater for the 
    list, and ability to adjust roster"""
    
    def __init__(self):
        self.students = []

    def load_from_list(self, names): 
        self.students = names 

    def get_random_student(self):
        if not self.students:
            return None
        return random.choice(self.students)