Перебор списка заново при достижении последнего элемента списка

def main():
    """the main function has existing schedule as a list, input of time by
    user"""
    schedule = [630,1015,1415,1620,1720,2000] #existing timetable for buses
                                            #without divider between hour and
                                            #minutes
    user = int(input("Enter the time (as an integer): ")) #time by user
    new = [] #new list is empty
    for number in schedule: #cycle for searching the next buses coming after
                            # time asked from user
        if number >= user:
            new.append(number)
 
    for i in range(3): #we need to print the next 3 buses time
        print(new[i])
 
if __name__ == "__main__":
    main()

    '''for i in range(3): #we need to print the next 3 buses time
        print(new[i])'''
    print(new)

>>> %Run test.py
Enter the time (as an integer): 1800
[2000]
>>>

 if number >= user:
            new.append(number)

schedule = [630, 1015, 1415, 1620, 1720, 2000]
n = int(input())
 
for i, e in enumerate(schedule):
    if e > n:
        for j in range(i, i + 3):
            print(schedule[j % len(schedule)])
        break