自动化批改系统：基于Selenium的在线考试评分脚本

from selenium.webdriver.chrome.options import Options
from selenium import webdriver
from selenium.webdriver.common.by import By
import time
import os
import random


def get_driver():
    # 检查是否已经打开浏览器
    browser_opened = False
    for handle in webdriver.Chrome().window_handles:
        browser_opened = True
        break

    # 创建浏览器实例或在已有浏览器中操作
    if browser_opened:
        options = Options()
        options.debugger_address = '127.0.0.1:9222'
        driver = webdriver.Chrome(options=options)
    else:
        os.system(r'start chrome --remote-debugging-port=9222 --user-data-dir="D:\评阅用"')
        options = Options()
        options.add_experimental_option('debuggerAddress', '127.0.0.1:9222')
        driver = webdriver.Chrome(options=options)

    return driver


driver = get_driver()

# 找到有‘内蒙古开放大学’字样的标签页
while True:
    for handle in driver.window_handles:
        driver.switch_to.window(handle)
        if '内蒙古开放大学' in driver.title:
            print('登录成功')
            break
    else:
        time.sleep(3)
        continue
    break

while True:
    # 等待题目组元素出现
    while True:
        try:
            elements = driver.find_elements(By.CLASS_NAME, 'card-div')
            if elements:
                break
        except:
            pass
        time.sleep(3)

    score_list = []
    subject_number_list = []
    for element in elements:
        # 查找待批改元素
        card_score_element = element.find_element(By.CLASS_NAME, 'card-score')
        if '待批改' not in card_score_element.text:
            continue
        # 查找题号元素
        subject_number_element = element.find_element(By.CLASS_NAME, 'subject-number')
        subject_number_text = subject_number_element.text
        # 提取题号
        subject_number = ''
        for char in subject_number_text:
            if char.isdigit():
                subject_number += char
        subject_number_list.append(subject_number)
        print('待批改的题目号为：', subject_number)

        # 判断是否作答
        answered = False
        elements = driver.find_elements(By.ID, f'subject-{subject_number}')
        for element in elements:
            answer_content_element = element.find_elements(By.CLASS_NAME, 'answer-content')
            if answer_content_element:
                answered = True
                break
        if not answered:
            print(f'第{subject_number}题未作答，不获取分值')
            continue

        # 查找标准答案和已经作答的元素
        standard_answer_element = None
        answered_element = None
        elements = driver.find_elements(By.ID, f'subject-{subject_number}')
        for element in elements:
            answer_content_element = element.find_elements(By.CLASS_NAME, 'answer-content')
            if answer_content_element:
                answered_element = answer_content_element[0]
            standard_answer_element = element.find_elements(By.XPATH, './/p[contains(@class,'ng-scope')]')
            if standard_answer_element:
                standard_answer_element = standard_answer_element[0]
                break

        # 如果没有标准答案的元素，则不进行对比，直接获取分值
        if not standard_answer_element:
            # 查找题目分值
            summary_numbers = []
            for element in elements:
                summary_element = element.find_element(By.CLASS_NAME, 'summary-sub-title')
                summary_text = summary_element.text
                summary_number = ''
                for char in summary_text:
                    if char.isdigit():
                        summary_number += char
                summary_numbers.append(int(summary_number))
                print(f'第{subject_number}题的分值为：{summary_number}')

            # 将题目分值存入列表
            score_list.extend(summary_numbers)
        else:
            # 获取标准答案和已经作答的内容
            standard_answer_text = standard_answer_element.text.replace(' ', '')
            answered_text = answered_element.text.replace(' ', '')
            # 如果已经作答的内容和标准答案的内容相同，则不进行减分操作
            if standard_answer_text == answered_text:
                print(f'第{subject_number}题已经作答，且作答正确，不进行减分操作')
                # 查找题目分值
                summary_numbers = []
                for element in elements:
                    summary_element = element.find_element(By.CLASS_NAME, 'summary-sub-title')
                    summary_text = summary_element.text
                    summary_number = ''
                    for char in summary_text:
                        if char.isdigit():
                            summary_number += char
                    summary_numbers.append(int(summary_number))
                    print(f'第{subject_number}题的分值为：{summary_number}')

                # 将题目分值存入列表
                score_list.extend(summary_numbers)
            else:
                # 查找题目分值
                summary_numbers = []
                for element in elements:
                    summary_element = element.find_element(By.CLASS_NAME, 'summary-sub-title')
                    summary_text = summary_element.text
                    summary_number = ''
                    for char in summary_text:
                        if char.isdigit():
                            summary_number += char
                    summary_numbers.append(int(summary_number))
                    print(f'第{subject_number}题的分值为：{summary_number}')

                # 将题目分值存入列表
                score_list.extend(summary_numbers)
                # 对选择的题目减分
                reduce_score = random.randint(1, 2)
                score_list[-1] -= reduce_score
                print(f'第{subject_number}题减{reduce_score}分，已填入{score_list[-1]}分，其他题满分')

    # 如果只有一个题目，则对这道题的分值减去1-2分
    if len(score_list) == 1:
        score_list[0] -= random.randint(1, 2)
        print(f'第{subject_number_list[0]}题减{score_list[0]}分，已填入{score_list[0]}分')
    else:
        # 随机选择2-5个题目减分
        if len(score_list) <= 5:
            reduce_num = len(score_list) - 1
        else:
            reduce_num = random.randint(2, 5)
        # 对样本数量进行判断
        if reduce_num > len(score_list) - 1:
            reduce_num = len(score_list) - 1
        elif reduce_num < 0:
            reduce_num = 0
        reduce_index_list = random.sample(range(len(score_list)), reduce_num)

        # 对选择的题目减分
        for i in reduce_index_list:
            subject_number = subject_number_list[i]
            reduce_score = random.randint(1, 2)
            score_list[i] -= reduce_score
            print(f'第{subject_number}题减{reduce_score}分，已填入{score_list[i]}分，其他题满分')

    # 将分值填入分值框中
    for i, subject_number in enumerate(subject_number_list):
        elements = driver.find_elements(By.ID, f'subject-{subject_number}')
        for element in elements:
            score_element = element.find_element(By.NAME, 'score')
            score_element.clear()
            score_element.send_keys(str(score_list[i]))
            time.sleep(0.5)

    # 等待提交成功
    while True:
        try:
            driver.find_element(By.CLASS_NAME, 'toast-message')
            time.sleep(1)
        except:
            break

    # 点击下一个学生
    next_student_element = driver.find_element(By.CLASS_NAME, 'icon-student-right-narrow')
    if 'unclickable' in next_student_element.get_attribute('class'):
        print('已经到最后一个学生')
        break
    else:
        next_student_element.click()
        time.sleep(3)