翻译程序

Question

好的。这就是我到目前为止所拥有的……#俄语翻译程序

import os
import random

#Asks users if they want to add more vocabulary
word_adder=raw_input("Add more words? If yes, press 1: ")
with open("Russian_study.txt","a") as f:
    while word_adder=="1":
        word=raw_input("Enter word: ")
        translation=raw_input("Word translation: ")
        f.write("{0}:{1},/n".format(word,translation))
        word_adder=raw_input("Add another word? If yes, press 1: ")

#Checks to see if file exists, if not one is created
with open("Russian_study.txt","a") as f:
    pass

os.system('clear')
print("Begin Quiz")

#Begin testing user
with open("Russian_study.txt","r") as f:
    from random import choice
    question, answer = choice(list(f)).split(':')
    result = raw_input('{0} is '.format(question))
    print('Correct' if result==answer else ':(')

这个程序可以工作，但是，当添加多个条目时，它总是显示不正确。有什么帮助吗？此外，它在一个问题后停止运行，永远不会进入下一个问题……

Answer 1

这里有几个问题。

1. A输入错误：/n而不是\n在循环中第一次执行list(f)，它调用f.readlines()，将读取的“指针”移动到文件的末尾。因此，对list(f)的所有后续调用都将返回一个空列表。注意这个隐藏的state.
2. list(f)在它返回的行中包含换行符，并且在任何答案的末尾都有一个逗号。所以answer会得到类似于"word,\n"的东西。在比较answer和result.
3. It之前，你必须去掉这两个字符，因为在提问部分没有循环，所以在第一个问题之后停止运行。

考虑到所有这些，固定的程序(只需最少的更改)可能如下所示：

import os
import random

#Asks users if they want to add more vocabulary
word_adder=input("Add more words? If yes, press 1: ")
with open("Russian_study.txt","a") as f:
    while word_adder=="1":
        word=input("Enter word: ")
        translation=input("Word translation: ")
        f.write("{0}:{1},\n".format(word,translation))
        word_adder=input("Add another word? If yes, press 1: ")

#Checks to see if file exists, if not one is created
with open("Russian_study.txt","a") as f:
    pass

os.system('clear')
print("Begin Quiz")

#Begin testing user
with open("Russian_study.txt","r") as f:
    l = list(f)
    from random import choice
    while True:
        question, answer = choice(l).split(':')
        answer = answer[:-2]
        result = input('{0} is '.format(question))
        print('Correct' if result==answer else ':( ')

Answer 2

为我工作的代码。感谢你们所有的帮助

导入操作系统随机导入

#Asks users if they want to add more vocabulary
word_adder=raw_input("Add more words? If yes, press 1: ")
with open("Russian_study.txt","a") as f:
    while word_adder=="1":
    word=raw_input("Enter word: ")
    translation=raw_input("Word translation: ")
    f.write("{0}:{1},\n".format(word,translation))
    word_adder=raw_input("Add another word? If yes, press 1: ")

#Checks to see if file exists, if not one is created
with open("Russian_study.txt","a") as f:
    pass

os.system('clear')
print("Begin Quiz")

#Begin testing user
with open("Russian_study.txt","r") as f:
    l = list(f)
    from random import choice
    while True:
        question, answer = choice(l).split(':')
        answer = answer[:-2]
        result = raw_input('{0} is '.format(question))
        print('Correct' if result==answer else ':( ')