如何让Python（Replit）测验程序同时识别大小写字母为正确答案？

你的问题出在调用字符串方法时少加了括号——.lower只是引用方法本身，没有执行转换操作，必须用.lower()才能得到转换后的小写字符串。

只需要修改run_quiz函数里的答案处理逻辑，把用户输入的答案转成小写，再和预设答案的小写版本对比，就能实现大小写不敏感的判断：

def run_quiz(questions):
  score = 0
  for question in questions:
    # 将输入转成小写，同时去除可能的首尾空格
    answer = input(question.prompt).strip().lower()
    # 把预设答案也转成小写，确保匹配不受大小写影响
    if answer == question.answer.lower():
      score += 1

  print("You got " + str(score) + "/" + str(len(questions)) + " Correct!")

另外加上.strip()还能处理用户输入时不小心多打空格的情况，提升程序的鲁棒性。

修改后的完整代码如下：

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


# 定义问题
question_prompts =[
  "Who did Echo fall in love with?\n(a) Poseidon\n(b) Zeus\n(c) Narcissus\n(d) Aphrodite ",
  "What did the nymphs find instead of Narcissus' body?\n(a) A dog\n(b) A flower\n(c) A     hand\n(d) A pile of hair ",
  "Who cursed Echo?\n(a) Athena\n(b) Hades\n(c) Hercules\n(d) Hera ",
  "Where was the place Echo found to live in?\n(a) A cave\n(b) A palace\n(c) A cottage\n(d)     A forest ",
  "Where did Narcissus live?\n(a) A dessert\n(b) A jungle\n(c) A house\n(d) A forest ",
  "What was the last thing that was left of Echo?\n(a) Her voice\n(b) Her Ears\n(c) Her   Mouth\n(d) Her Nose ",
  "What type of nymph was Echo?\n(a) A grass nymph\n(b) A wood nymph\n(c) A water nymph\n(d) An ice nymph ",
  "What was Narcissus hunting when Echo first saw him?\n(a) Rabbit\n(b) Bird\n(c) Fish\n(d) Deer ",
  "What did Narcissus fall in love with?\n(a) Echo\n(b) A deer\n(c) His own reflection\n(d) Echo's reflection ",
  "What was Narcissus's last word?\n(a) Hate\n(b) Love\n(c) Happiness\n(d) Sadness "

]

# 设置问题与对应答案
questions = [
  Question(question_prompts[0], "c"),
  Question(question_prompts[1], "b"),
  Question(question_prompts[2], "d"),
  Question(question_prompts[3], "a"),
  Question(question_prompts[4], "d"),
  Question(question_prompts[5], "a"),
  Question(question_prompts[6], "b"),
  Question(question_prompts[7], "d"),
  Question(question_prompts[8], "c"),
  Question(question_prompts[9], "b")

]

# 运行测验并计算得分
def run_quiz(questions):
  score = 0
  for question in questions:
    answer = input(question.prompt).strip().lower()
    if answer == question.answer.lower():
      score += 1

  print("You got " + str(score) + "/" + str(len(questions)) + " Correct!")

run_quiz(questions)

内容的提问来源于stack exchange，提问作者Kieran O'Mara