用python实现自动改卷

实现自动改卷需要先进行一些前置工作，如将试卷题目和答案进行格式化，并将答案存储在数据库或文件中。接下来可以使用Python的文本处理、字符串匹配等功能来完成自动改卷的功能。

以下是一个简单的自动改卷的示例代码：

import re

# 读取答案文件
with open('answer.txt', 'r') as f:
    answers = f.read()

# 格式化答案
answers = answers.strip().split('\n')
answers_dict = {}
for answer in answers:
    answer_parts = answer.split(':')
    answers_dict[answer_parts[0]] = answer_parts[1]

# 读取学生答案文件
with open('student_answers.txt', 'r') as f:
    student_answers = f.read()

# 格式化学生答案
student_answers = student_answers.strip().split('\n')
student_answers_dict = {}
for student_answer in student_answers:
    student_answer_parts = student_answer.split(':')
    student_answers_dict[student_answer_parts[0]] = student_answer_parts[1]

# 比较答案
for q_num, q_answer in answers_dict.items():
    student_answer = student_answers_dict.get(q_num, '')
    if student_answer.lower() == q_answer.lower():
        print(f'Question {q_num} is correct!')
    else:
        print(f'Question {q_num} is incorrect!')

该代码通过读取答案文件和学生答案文件，将其格式化为字典，再逐一比较学生答案与标准答案是否一致，并输出结果。