[Tutor] Python Programming for the Absolute Beginner - Chap 7 Q: 2
Hello, I am a python newbie. I am reading this book (Python Programming for the Absolute Beginner). I am on Chapter 7, Question 2. Improve the Trivia Challenge game so that it maintains a high-scores list in a file. The program should record the player's name and score. Store the high scores using a pickled object. I have the following code so far: def high_score(): Records a player's score high_scores = [] #add a score // Do current stuff for adding a new score... name = input(What is your name? ) player_score = int(input(What is your score? )) entry = (name, player_score) high_scores.append(entry) high_scores.sort(reverse=True) high_scores = high_scores[:5] # keep only top five # dump scores f = open(pickles1.dat, wb) pickle.dump(high_scores, f) f.close() f = open(pickles1.dat, rb) high_scores = pickle.load(f) print(high_scores) f.close() When I execute this program in the main() program I get only the existing single name, player_score list combination stored in the pickles1.dat file. Can someone walk me through how it can store all the values each time the program is ran? Thanks, Zack H. ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Python Programming for the Absolute Beginner - Chap 7 Q: 2
On 12/08/13 01:52, Zack Hasanov wrote: I have the following code so far: def high_score(): high_scores = [] name = input(What is your name? ) player_score = int(input(What is your score? )) entry = (name, player_score) high_scores.append(entry) high_scores.sort(reverse=True) high_scores = high_scores[:5] # keep only top five Note that you never read the stored values from your pickle file you just add a single value. # dump scores f = open(pickles1.dat, wb) pickle.dump(high_scores, f) f.close() This then dumps that single value to the file overwriting anything that might have already been there. f = open(pickles1.dat, rb) high_scores = pickle.load(f) print(high_scores) You then load the new value and print it. When I execute this program in the main() program I get only the existing single name, player_score list combination stored in the pickles1.dat file. I have no idea how you call this. Presumably from within a loop? But because you never read in the stored values before writing the new you only ever get the last value stored. You need to insert code like your last block above at the top of the function to pre-populate high_scores before adding the new entry. Once you get that working we can look at tidying up some of the unnecessary code that will be left over, but lets get it working first! HTH -- Alan G Author of the Learn to Program web site http://www.alan-g.me.uk/ ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
