Pycharm没有看到定义的东西

Question

因此，我正在尝试进行多项选择测试（目前仍处于beta测试中，Pycharm并未看到所定义的变量/字符串。它可以在codeskulptor.org中工作，但不能在Pycharm中工作。我什至在Mac上尝试通过Terminal仍然没有运气。它在NameError中给我同样的错误“ File”，第1行：未定义名称“ a”。有人可以帮我解决这个问题吗？ “ a位于“ \ n（a）小而简单，缺少原子核，”将是问题的答案。问题在于“ Question（question（question_prompts [0]，“ a”））”，我认为是因为在哪里定义的，对吧？

import time

class Question:
    def __init__(self, prompt, answer):
        self.prompt = prompt
        self.answer = answer


question_prompts = [
    """prokaryotic cells have what characteristics?\n(a) are small and simple, lacks a nucleus, 
    do not have organells, are a single cell creatures, and have a cell wall.\n\n """
]

questions = [
    Question(question_prompts[0], "a")

]

print("Cell Unit Test")
time.sleep(2)
print("10 seconds until test time, take your stuff off your desk")
#time.sleep(10)
print("The test will now commence")
time.sleep(1)


def run_test(questions):
    score = 0
    for question in questions:
        print(question.prompt)
        answer = input("Answer:\n ")
        if answer == question.answer:
            print("Correct!\n")
            score += 1
        else:
            print("Wrong! The correct answer is " + question.answer + "\n")

    print("\nEnd of the test.")
    print("You got " + str(score) + " out of " + str(len(questions)) + " questions correct")


run_test(questions)



class Question:
    def __init__(self, prompt, answer):
        self.prompt = prompt
        self.answer = answer


question_prompts = [
    """prokaryotic cells have what characteristics?\n(a) are small and simple, lacks a nucleus, 
    do not have organelles, are single-cell creatures, and have a cell wall.\n\n """
]

questions = [
    Question(question_prompts[0], "a")

]

print("Cell Unit Test")
time.sleep(2)
print("10 seconds until test time, take your stuff off your desk")
#time.sleep(10)
print("The test will now commence")
time.sleep(1)


def run_test(questions):
    score = 0
    for question in questions:
        print(question.prompt)
        answer = input("Answer:\n ")
        if answer == question.answer:
            print("Correct!\n")
            score += 1
        else:
            print("Wrong! The correct answer is " + question.answer + "\n")

    print("\nEnd of the test.")
    print("You got " + str(score) + " out of " + str(len(questions)) + " questions correct")


run_test(questions)'

因此，我正在尝试进行多项选择测试（目前仍处于beta测试中，Pycharm并未看到所定义的变量/字符串。它可以在codeskulptor.org中工作，但不能在Pycharm中工作。我什至尝试了...

Answer 1

这是Python 3代码，但是您正在Pycharm中使用Python 2解释器对其进行解释。之所以会出现此错误，是因为Python 2中的input具有“类似eval”的行为，并且它试图从字面上解释将您输入的“ a”作为要引用的变量。]​​>

[将您在Pycharm中使用的解释器更改为Python 3解释器。或者，您也可以将input更改为raw_input，但是通过使用print()判断，该操作旨在在Python 3解释器中运行。