How to fix error IndexError: list index out of range For the following code: NBAlist = open('NBA-Attendance-2015.csv') print(NBAlist) print ('List of items on each line: ', NBAlist) print('The overall attendance at {0} was {1:,}, average attendance was {2:,} and the capacity was {3:.2f}%'.format(items[0], int(items[1]), int(items[2]), float(items[3])))