python - Saving scores with Pickle -


i'm quite new python. have written program saves high scores in pickle dictionary object , calls it. have few questions program maybe can me with.

  • how store , update data through multiple app launches? (quitting python idle , reopening not save these scores)
  • solved: why program write new score of same person no matter if higher or lower?

-

import pickle  high_scores = {"adam smith": 65536, "john doe": 10000} open("highscores.pkl","wb") out:     pickle.dump(high_scores, out)  new_score = (raw_input("enter name ").title(), int(raw_input("enter score ")))  open("highscores.pkl","rb") in_:     high_scores = pickle.load(in_) if new_score[0] not in high_scores:     high_scores[new_score[0]] = new_score[1] if new_score[0] in high_scores , new_score[1] not in high_scores.values():     high_scores[new_score[0]] = new_score[1]  else:     pass  open("highscores.pkl","wb") out:     pickle.dump(high_scores, out)  print("-" * 80) name, score in high_scores.items():     print("{{name:>{col_width}}} | {{score:<{col_width}}}".format(col_width=(80-3)//2).format(name=name, score=score))

as per padraic's suggestion, code below checks see if highscores.pkl exists. if does, unpickles contents high_scores, otherwise 2 default scores assigned it.

from there, after new score has been entered, check see if key (player name) exists in high_scores. if does, , new score higher old score replaced. if key not exist, add player , score.

after check has been carried out, high_scores saved writing highscores.pkl file.

import pickle import os  high_scores = {}  if os.path.isfile('highscores.pkl'):     open("highscores.pkl", "rb") f:         high_scores = pickle.load(f) else:     high_scores = {"adam smith": 65536, "john doe": 10000}  new_score = (raw_input("enter name ").title(), int(raw_input("enter score ")))  if new_score[0] in high_scores:     if new_score[1] > high_scores[new_score[0]]:         high_scores[new_score[0]] = new_score[1] else:     high_scores[new_score[0]] = new_score[1]   open("highscores.pkl","wb") out:     pickle.dump(high_scores, out)  print("-" * 80) name, score in high_scores.items():     print("{{name:>{col_width}}} | {{score:<{col_width}}}".format(col_width=(80-3)//2).format(name=name, score=score))

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