Function loop

recipes/Python/492215_diskdemopy/recipe-492215.py:16–56

()

    print '+---------------------+'

def loop():
    valid_disk = False
    while True:
        print
        print 'PROGRAM MENU'
        print '============'
        print '(1) Create Disk'
        print '(2) Load Disk'
        if valid_disk:
            print '(3) Save Disk'
            print '(4) Use Disk'
        while True:
            try:
                select = raw_input('Select: ')
            except:
                exit(0)
            try:
                select = int(select)
                if 0 < select < 3 or (2 < select < 5 and valid_disk):
                    break
                else:
                    print 'Select should be between 1 and',
                    if valid_disk:
                        print '4.'
                    else:
                        print '2.'
            except:
                print 'Select should be a number.'
            print
        if select == 1:
            disk = create_disk()
            disk.seed(False)
            valid_disk = True
        elif select == 2:
            disk = load_disk()
            disk.seed(False)
            valid_disk = True
        elif select == 3:
            save_disk(disk)
        else:
            use_disk(disk)

def create_disk():
    while True: