最近在搞软件工程课程设计，做了一个在线考试系统，为了弄到题库数据，简单利用了python中的selenium库实现对python123平台自动登录并获取相应的选择试题。

实现自动登录并获取题目

只针对了自己所做过的选择题进行爬取，然后把所得数据存储在excel表格中。

from time import sleep
from selenium.webdriver import Chrome
import csv


datelist = []

def get_element():
    web.get("https://www.python123.io/index/login")
    uername = web.find_element_by_xpath(
        '//*[@id="links"]/div[1]/div[2]/div/div[1]/div[1]/div/div[1]/div/div[1]/div[2]/form/div[1]/div/input')
    passworld = web.find_element_by_xpath(
        '//*[@id="links"]/div[1]/div[2]/div/div[1]/div[1]/div/div[1]/div/div[1]/div[2]/form/div[2]/div/input')

    uername.send_keys('******')  # python123官网的用户名
    passworld.send_keys('******')  # python123的账户密码

    login = web.find_element_by_xpath(
        '//*[@id="links"]/div[1]/div[2]/div/div[1]/div[1]/div/div[1]/div/div[1]/div[2]/div[3]/div[1]/button')
    login.click()
    sleep(2)
    #选择课程
    web.find_element_by_xpath(
        '//*[@id="app"]/div/div[1]/div[1]/div[1]/nav/div[2]/div[1]/a[2]').click()
    sleep(2)
    #选择对应的课
    web.find_element_by_xpath(
        '//*[@id="app"]/div/div[1]/div[1]/div[2]/section/div/div[1]/div[2]/div/div/div/figure/img').click()
    sleep(2)

    #选择课程任务
    web.find_element_by_xpath(
        '//*[@id="app"]/div/div[1]/div[1]/div[2]/section/div/div/div[2]/div/div/div/div/div/div/div[1]/div/div/div/div[1]/div[3]/a[2]').click()
    sleep(2)


def parse_questionlist(datelist):

    #获取题目信息
    list = web.find_elements_by_css_selector('div[class="card-content is-clipped"]')

    for li in list:
        date = []

        timu = li.find_element_by_css_selector('div[class="mce-content-body"]').text  # 题目信息
        #print(timu)
        date.append(timu)

        xuanxiang = li.find_elements_by_css_selector('div[class="content content"]')

        for xuan in xuanxiang:
            Choose = xuan.find_element_by_css_selector('div[class="mce-content-body"]').text  # 选项
            date.append(Choose)
            #print(Choose)

        answer = li.find_element_by_css_selector('div.answers.rightanswer > span:nth-child(4)').text  # 答案
        date.append(answer)
        #print(answer)
        datelist.append(date)

    return datelist


def piliang_sava():


    #每个测试对应的selector
    num = [
        '//*[@id="app"]/div/div[1]/div[1]/div[2]/section/div/div/div[2]/div/div/div/div/div[2]/div[2]/div/div[1]/div',
        '//*[@id="app"]/div/div[1]/div[1]/div[2]/section/div/div/div[2]/div/div/div/div/div[2]/div[2]/div/div[2]/div',
        '//*[@id="app"]/div/div[1]/div[1]/div[2]/section/div/div/div[2]/div/div/div/div/div[2]/div[2]/div/div[3]/div',
        '//*[@id="app"]/div/div[1]/div[1]/div[2]/section/div/div/div[2]/div/div/div/div/div[2]/div[2]/div/div[4]/div',
        '//*[@id="app"]/div/div[1]/div[1]/div[2]/section/div/div/div[2]/div/div/div/div/div[2]/div[2]/div/div[5]/div',
        '//*[@id="app"]/div/div[1]/div[1]/div[2]/section/div/div/div[2]/div/div/div/div/div[2]/div[2]/div/div[6]/div',
        '//*[@id="app"]/div/div[1]/div[1]/div[2]/section/div/div/div[2]/div/div/div/div/div[2]/div[2]/div/div[7]/div',
        '//*[@id="app"]/div/div[1]/div[1]/div[2]/section/div/div/div[2]/div/div/div/div/div[2]/div[2]/div/div[8]/div'
        ]

    # 退出
    for i in range(0,8):

        # 选择测试
        sleep(5)

        web.find_element_by_xpath(num[i]).click()

        sleep(5)

        # 查看选择题
        web.find_element_by_xpath(
            '//*[@id="group-wrapper"]/div/div[2]/div[1]/div/a[4]').click()

        parse_questionlist(datelist)


        sleep(5)


        web.find_element_by_xpath(
            '//*[@id="app"]/div/div[1]/div[1]/div[2]/section/div/div/div[1]/div/div/div/ul[2]/li[2]/a').click()

    return datelist


def sava_data(datelist):

    f = open('python123题库爬取.csv','w',encoding='utf-8-sig',newline="")

    csv_write = csv.writer(f)

    csv_write.writerow(['题目', '选项A', '选项B', '选项C', '选项D','答案','题目状态'])

    for data in datelist:
        csv_write.writerow([data[0], data[1], data[2], data[3], data[4],data[5],'1'])

    f.close()


if __name__ == '__main__':

    web = Chrome()
    web.maximize_window()
    get_element()
    tiku = piliang_sava()
    #print(tiku)
    sava_data(tiku)