def sortFileContents(txt): with open(txt, 'r') as f: lst = f.readlines() for i in range(len(lst)): lst[i] = int(lst[i]) lst.sort() with open(r'sortedScores.txt', 'w') as f2: for j in range(len(lst)): f2.write(str(lst[j])+'\n') print(lst) sortFileContents(r'Scores.txt')