📅  最后修改于: 2023-12-03 14:54:03.061000             🧑  作者: Mango
这是一个用于进行小数加法和减法在线测验的程序。它可以生成一系列带有三个或更多数字的小数加法和减法题目,并检查用户输入的答案是否正确。
在开始使用之前,需要确保已安装以下依赖:
可以使用以下命令安装依赖:
pip install pandas
下载并运行以下 Python 代码:
import random
import pandas as pd
def generate_quiz(num_questions):
"""
生成指定数量的小数加法和减法题目
"""
quiz = pd.DataFrame(columns=['Question', 'Answer'])
for _ in range(num_questions):
a = round(random.uniform(0, 10), 2) # 生成一个随机小数
b = round(random.uniform(0, 10), 2)
operator = random.choice(['+', '-']) # 随机选择加法或减法
question = f"{a} {operator} {b}" # 构建题目字符串
if operator == '+':
answer = round(a + b, 2) # 计算正确答案
else:
answer = round(a - b, 2)
quiz = quiz.append({'Question': question, 'Answer': answer}, ignore_index=True)
return quiz
def check_answers(quiz):
"""
检查用户答案,并返回得分和答题统计
"""
score = 0
num_correct = 0
for index, row in quiz.iterrows():
user_answer = float(input(f"Question {index+1}: {row['Question']} = "))
if user_answer == row['Answer']:
score += 1
num_correct += 1
else:
print(f"Wrong answer! The correct answer is {row['Answer']}.")
return score, num_correct
if __name__ == '__main__':
num_questions = int(input("Enter the number of questions: "))
quiz = generate_quiz(num_questions)
score, num_correct = check_answers(quiz)
print(f"Score: {score}/{num_questions}")
print(f"Number of correct answers: {num_correct}")
在命令行中执行以上代码后,根据提示输入题目数量和对应的答案。完成所有题目后,将会显示得分和答题统计。
Enter the number of questions: 5
Question 1: 2.3 - 1.1 = 1.2
Question 2: 8.6 + 3.4 = 12
Wrong answer! The correct answer is 12.2.
Question 3: 5.1 + 4.2 = 9.3
Question 4: 9.8 - 2.6 = 7.2
Question 5: 3.7 + 2.9 = 6.6
Score: 3/5
Number of correct answers: 3
使用这个程序,你可以轻松生成一系列带有三个或更多数字的小数加法和减法题目,并检查用户的答案是否正确。这对于在线教育、数学学习网站等平台提供小数加法和减法测试非常有用。你可以根据需求自定义题目数量和范围。