Python语句问题

Question

我试图创建一个问答程序，在这个程序中，程序从一个文件中询问一个问题，然后比较答案，但是当我写正确的答案时，它仍然告诉我它是错误的。

import random

def Questionnaire():  
    a=1
    i=1
    while i <= 10 :
        with open("mcq.txt", "r") as r:
            list = r.readlines()
            questions = random.choice(list)
            questans = questions.split(";;")
            question, answer = questans[0], questans[1]
            print(f"Q{a} - {question}")
            a,i=a+1,i+1
            ans(answer) 

def ans(answer):
    mychoice =str(input("What is your answer ?"))
    if mychoice != answer :
        print(f"Wrong answer, the right one is : {answer} \n")
    else :
        print("Bravo, it is the right one ! \n")

Questionnaire()

在我的第二个函数中，if else语句总是返回False，即使我更改为make != BTW文本页类似于Who was the first president of the USA? A-Trump B-Clinton C-Lincoln D-George Washington;;D，并且它继续这样。

该文件如下所示

Who is the head of the new government in France in 1936? A-Thorez B-Blum C-Daladier D-Pétain ;; B
What is the slogan of the Popular Front? A- “With France, for the French” B- “liberty, equality, fraternity” C- “work, family, homeland” D- “bread, peace, freedom” ;; D
Which party does not make up the Popular Front? A-The Radical Party B-The SFIO C-The National Bloc D-The Communist Party ;; C
What event of 1934 contributed to the creation of the Popular Front? A-The Congress of Tours B-The riots of the leagues C-The Crash of Wall-Street D-The resignation of Clémenceau ;; B
What event is at the origin of the crisis of the 1930s? A-The Russian Revolution B-The Rise of Fascism C-The First World War D-The Wall Street Crash ;; D
Which of these countries is an island? A-France B-Netherlands C-Australia D-Korea ;; C
What is the color of Henri's white horse 4 A-Green B-Red C-Gray D-White ;; D
One byte corresponds to A-1bit B-4 bits C-8 bits D-32 bits ;; C
With 1 byte you can encode A-255 values ​​B-8 values ​​C-16 values ​​D-256 values ​​;; D
What is Microsoft Windows? A-A type of computer B-An operating system C-A database management system ;; B
The binary system uses the basis A-2 B-10 C-8 D-16 E-None of the above is true. ;; A
In Greco-Roman mythology, the gods gathered on A-Mount Sinai B-Vesuvius C-Mount Olympus ;; C
In Greek mythology, Pegasus is A-A winged horse B-A man with an eagle's head C-A giant ;; A
In what year was François Mitterrand elected President of the French Republic? A-1974 B-1976 C-1981 D-1986 ;; C

谢谢

Answer 1

修复

这是因为，当使用readlines()时，它会给出一个以\n char结尾的字符串列表，因此答案字符串变成了与A不同的A\n。还有，有时在回信前有一个空格。使用str.strip()将两者都删除

question, answer = questans[0], questans[1].strip()

改进

在每次迭代时打开和读取整个文件:在beginning

• random.choice上读取一次可以在两个不同的迭代中给出相同的行:使用random.shuffle随机化一次，然后接受order

• a和i做相同的操作，保持一个

• 使用enumerate和一个问题列表中的一部分只做X问题

def Questionnaire(nb_question=10):
    with open("test.txt", "r", encoding="utf-8") as r:
        values = r.read().splitlines()  # don't keep ending \n

    random.shuffle(values)  # randomize once

    for i, questions in enumerate(values[:nb_question], start=1):
        question, answer = questions.split(";;")
        print(f"Q{i} - {question.strip()}")
        ans(answer.strip())