通过循环取消勾选Python字典？

我对Python非常陌生，我试图实现的是对字典进行pickle处理，然后使用某种形式的循环（如果术语不正确，请道歉！）打印文件中的所有分数

我使用的是Python3.3.3，下面是我的尝试，用户输入一个名称和分数，该名称和分数首先保存到一个文件中，然后我尝试打印它。但是我无法打印分数

import pickle

# store the scores in a pickled file
def save_scores(player, score):    

    f = open("high_score.dat", "ab")
    d = {player:score}
    pickle.dump(d, f)
    f.close

# print all the scores from the file     
def print_scores():

     # this is the part that I can't get to work!
     with open("high_score.dat", "r") as f:
        try:
            for player, score  in pickle.load(f):
                print("Player: ", player, " scored : ", score)
        except EOFError:
            pass    
    f.close

def main():

    player_name = input("Enter a name: ")
    player_score = input("Enter a score: ")

    save_scores(player = player_name, score = player_score)
    print_scores()


main()

input("\nPress the Enter key to exit")   

我在谷歌上搜索了Stackoverflow，寻找类似的问题，但我一定是用错了词，因为我还没有找到解决方案

提前感谢。

pickle.load（f）将返回一个字典。如果迭代字典，它将生成键，而不是键值对

要生成键值paris，请使用

items（）

method（如果使用Python 2.x，请使用

iteritems（）

method）：

要获取多个词典，您需要循环：

with open("high_score.dat", "r") as f:
    try:
        while True:
            for player, score  in pickle.load(f).items():
                # print("Player: ", k, " scored : ", v) # k, v - typo
                print("Player: ", player, " scored : ", score)
    except EOFError:
        pass    

顺便说一句，如果您对语句使用

，您不需要自己关闭文件

# f.close # This line is not necessary. BTW, the function call is missing `()`

pickle.load（f）
将返回一个字典。如果迭代字典，它将生成键，而不是键值对

要生成键值paris，请使用
items（）
method（如果使用Python 2.x，请使用
iteritems（）
method）：

要获取多个词典，您需要循环：

with open("high_score.dat", "r") as f:
    try:
        while True:
            for player, score  in pickle.load(f).items():
                # print("Player: ", k, " scored : ", v) # k, v - typo
                print("Player: ", player, " scored : ", score)
    except EOFError:
        pass    

顺便说一句，如果您对

语句使用

，您不需要自己关闭文件

# f.close # This line is not necessary. BTW, the function call is missing `()`

pickle.load
将返回您的字典（
{player:score}
）

此代码：

for player, score  in pickle.load(f):

将尝试将返回值解包为元组。
另外，由于您忽略了异常，因此很难判断出发生了什么错误。
pickle.load
将返回您的字典（
{player:score}
）

此代码：

for player, score  in pickle.load(f):

将尝试将返回值解包为元组。
另外，由于您忽略了异常，因此很难判断出哪里出了问题。
我已经做了一些修复，使您的代码在Python 2下工作（抱歉，没有可用的Python 3）。换了几个地方。下面是一些注释：

#!/bin/python2
import pickle

# store the scores in a pickled file
def save_scores(player, score):    
    f = open("high_score.dat", "wb")  # "wb" mode instead of "ab" since there is no obvious way to split pickled objects (surely you can make it, but it seems a bit hard subtask for such task)
    d = {player:score}
    pickle.dump(d, f)
    f.close()  # f.close is a method; to call it you should write f.close()

# print all the scores from the file     
def print_scores():

     # this is the part that I can't get to work!
     with open("high_score.dat", "rb") as f:  # "rb" mode instead of "r" since if you write in binary mode than you should read in binary mode
        try:
            scores = pickle.load(f)
            for player, score  in scores.iteritems():  # Iterate through dict like this in Python 2
                print("Player: ", player, " scored : ", score)  # player instead of k and score instead of v variables
        except EOFError:
            pass    
     # f.close -- 1. close is a method so use f.close(); 2. No need to close file as it is already closed after exiting `where` expression.

def main():

    player_name = raw_input("Enter a name: ")  # raw_input instead of input - Python 2 vs 3 specific
    player_score = raw_input("Enter a score: ")

    save_scores(player = player_name, score = player_score)
    print_scores()


main()

raw_input("\nPress the Enter key to exit")

我已经做了一些修复，使您的代码在Python2下工作（对不起，没有Python3可用）。换了几个地方。下面是一些注释：

#!/bin/python2
import pickle

# store the scores in a pickled file
def save_scores(player, score):    
    f = open("high_score.dat", "wb")  # "wb" mode instead of "ab" since there is no obvious way to split pickled objects (surely you can make it, but it seems a bit hard subtask for such task)
    d = {player:score}
    pickle.dump(d, f)
    f.close()  # f.close is a method; to call it you should write f.close()

# print all the scores from the file     
def print_scores():

     # this is the part that I can't get to work!
     with open("high_score.dat", "rb") as f:  # "rb" mode instead of "r" since if you write in binary mode than you should read in binary mode
        try:
            scores = pickle.load(f)
            for player, score  in scores.iteritems():  # Iterate through dict like this in Python 2
                print("Player: ", player, " scored : ", score)  # player instead of k and score instead of v variables
        except EOFError:
            pass    
     # f.close -- 1. close is a method so use f.close(); 2. No need to close file as it is already closed after exiting `where` expression.

def main():

    player_name = raw_input("Enter a name: ")  # raw_input instead of input - Python 2 vs 3 specific
    player_score = raw_input("Enter a score: ")

    save_scores(player = player_name, score = player_score)
    print_scores()


main()

raw_input("\nPress the Enter key to exit")

谢谢你的全面回答！我已经更新了我的问题，表明我正在使用3.3.3版。我还更新了代码以反映这些更改，但是我现在看到了以下错误：文件“H:/Sandbox/python/save_and_print_scores.py”，第19行，在print_scores for player中，在pickle.load（f）.items（）中得分：TypeError:“str”不支持缓冲区interface@IanCarpenter,你能把
high_score.dat
文件上传到什么地方吗？@iancarcenter，我在你的代码中发现了一个输入错误。在下一行中，
k
，
v
应替换为：
print（“Player:，k，“scored:，v”）
。相应地更新了答案。@IANCARPENT，
f.close
在
save_scores
功能中也缺少
（）
。如果没有括号，它将不会调用
close
method.@iancarcenter，没问题。快乐Python编程：）谢谢你的全面回答！我已经更新了我的问题，表明我正在使用3.3.3版。我还更新了代码以反映这些更改，但是我现在看到了以下错误：文件“H:/Sandbox/python/save_and_print_scores.py”，第19行，在print_scores for player中，在pickle.load（f）.items（）中得分：TypeError:“str”不支持缓冲区interface@IanCarpenter,你能把
high_score.dat
文件上传到什么地方吗？@iancarcenter，我在你的代码中发现了一个输入错误。在下一行中，
k
，
v
应替换为：
print（“Player:，k，“scored:，v”）
。相应地更新了答案。@IANCARPENT，
f.close
在
save_scores
功能中也缺少
（）
。如果没有括号，它将不会调用
close
method.@iancarcenter，没问题。快乐Python编程：）