最近学了点python,想写个爬虫玩玩,刚好遇到情人节
时间:2018.5.19
地点:208教室
工具:Chrome、阿里云服务器
先来列举下要爬取的内容
(1)爬取天气
(2)爬取文章
(3)爬取句子
爬取天气
# -*-coding:utf-8 -*-import requestsfrom pyquery import PyQuery as pqdef get_response(url): headers = { 'User-Agent':'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecho) Chrome/67.0.3396.10 Safari/537.36' } res = requests.get(url,headers=headers) res.encoding = 'utf-8' return resdef get_weather(doc): wea = doc('li.sky.skyid.lv3.on').text() one = doc('.hide.show > .clearfix > li.li1').text() two = doc('.hide.show > .clearfix > li.li2').text() three = doc('.hide.show > .clearfix > li.li3').text() four = doc('.hide.show > .clearfix > li.li6').text() print(wea,'\n') print(one,'\n') print(two,'\n') print(three,'\n') print(four,'\n')if __name__ == '__main__': url = 'http://www.weather.com.cn/weather/101120206.shtml' res = get_response(url) doc = pq(res.text) get_weather(doc)
运行结果如下:
19日(今天) 阵雨 14℃ 4-5级 弱 紫外线指数 辐射较弱,涂擦SPF12-15、PA+护肤品。 减肥指数 风雨相伴,坚持室内运动吧。 较冷 穿衣指数 建议着厚外套加毛衣等服装。 良 空气污染扩散指数 气象条件有利于空气污染物扩散。
获取文章链接
# -*-coding:utf-8 -*-import requestsfrom pyquery import PyQuery as pq def get_response(url): headers = { 'User-Agent':'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecho) Chrome/67.0.3396.10 Safari/537.36' } res = requests.get(url,headers=headers) res.encoding = 'utf-8' return resdef get_article(doc): items = doc('.list-base-article a').items() #---① for item in items: href = item.attr('href') #---② string = 'https://www.duanwenxue.com' + href #---③ with open('article.txt','a') as f: #---④ f.write(string + '\n') print(string)if __name__ == '__main__': page_num = 1 url = 'https://www.duanwenxue.com/jingdian/lizhi/list_{}.html' while page_num < 8: res = get_response(url.format(page_num)) #---⑤ doc = pq(res.text) get_article(doc) page_num = page_num + 1
知识点总结:
①:pyquery的选择结果可能是多个节点,类型都是PyQuery类型,它不会返回一个列表,调用items()方法会得到一个生成器,遍历一下,就可以得到每个节点了。
②:用attr()方法获取属性值
③:string为拼接后的完整URL,可进一步获取文章内容
③:以追加的方式('a')写入文件,不然会覆盖掉原来的内容
④:手动翻页发现URL中最后的数字代表页数。使用format()格式化字符串,用来替换掉字符串中的占位符‘{}’,以达到翻页的效果。
爬取句子
import requestsfrom pyquery import PyQuery as pqdef get_response(url): headers = { 'User-Agent':'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecho) Chrome/67.0.3396.10 Safari/537.36' } res = requests.get(url,headers=headers) return resdef get_article(doc): items = doc('.list-short-article p a').items() for item in items: content = item.text() with open('letters.txt','a') as f: f.write(content + '\n') print(content)if __name__ == '__main__': page_num = 1 url = 'https://www.duanwenxue.com/duanwen/lizhi/list_{}.html' while page_num < 8: res = get_response(url.format(page_num)) doc = pq(res.text) get_article(doc) page_num = page_num + 1
随机选取一篇文章
# -*- coding:utf-8-*-import linecacheimport random a = random.randrange(1,99) print(a) theline = linecache.getline(r'letters_text.txt',a) print(theline)
python发送QQ邮件
# -*- coding:utf-8 -*-from email.mime.text import MIMETextfrom email.header import Headerfrom smtplib import SMTP_SSLimport linecacheimport randomdef send_masseger(): host_server = 'smtp.qq.com' sender_qq = '1394604132' pwd = '***********' sender_qq_mail = '**********@qq.com' receiver = '**********@qq.com' mail_content = "Hello World!" mail_title = 'The Mail from ***' smtp = SMTP_SSL(host_server) smtp.set_debuglevel(1) smtp.ehlo(host_server) smtp.login(sender_qq,pwd) msg = MIMEText(mail_content,'plain','utf-8') msg['Subject'] = Header(mail_title,'utf-8') msg['From'] = sender_qq_mail msg['To'] = receiver smtp.sendmail(sender_qq_mail,receiver,msg.as_string()) smtp.quit() if __name__ == '__main__': send_masseger()
python发送邮件代码参照:https://zhuanlan.zhihu.com/p/25565454
终于搞完了,先发给自己试一下~
mail.jpg
其实现在已经是5.20了,那个天气网上的天气还没更新,所以显示的还是昨天的天气 ~ 文章链接和句子是事先爬好存储起来,随机抽取的
代码如下:
# -*- coding:utf-8 -*-from email.mime.text import MIMETextfrom email.header import Headerfrom smtplib import SMTP_SSLimport linecacheimport randomimport datetimeimport requestsfrom pyquery import PyQuery as pqimport sys reload(sys) sys.setdefaultencoding('utf-8')def get_time(): start = datetime.datetime(2017,5,20) now = datetime.datetime.now() time = now - start return str(time)def send_masseger(content): host_server = 'smtp.qq.com' sender_qq = '1394604132' pwd = 'jzqwgplfatpggcic' sender_qq_mail = 'zhanghe0309@qq.com' receiver = '1270090178@qq.com' mail_content = content mail_title = 'The Mail from lover' smtp = SMTP_SSL(host_server) smtp.set_debuglevel(1) smtp.ehlo(host_server) smtp.login(sender_qq,pwd) msg = MIMEText(mail_content,'plain','utf-8') msg['Subject'] = Header(mail_title,'utf-8') msg['From'] = sender_qq_mail msg['To'] = receiver smtp.sendmail(sender_qq_mail,receiver,msg.as_string()) smtp.quit() if __name__ == '__main__': res = requests.get('http://www.weather.com.cn/weather/101120206.shtml') res.encoding = 'utf-8' doc = pq(res.text) wea = doc('li.sky.skyid.lv3.on').text() one = doc('.hide.show > .clearfix > li.li1').text() two = doc('.hide.show > .clearfix > li.li2').text() three = doc('.hide.show > .clearfix >li.li3').text() four = doc('.hide.show > .clearfix >li.li6').text() a = random.randrange(1,350) b = random.randrange(1,100) theline1 = linecache.getline(r'article.txt',a) theline2 = linecache.getline(r'letters_text.txt',b) article = wea + '\n\n' + one + '\n\n'+ two + '\n\n' + three + '\n\n' + four + '\n\n' + '来自小哥哥的文章推荐:' + '\n' + theline1 + '\n' + theline2 + '\n' + '爱你的日子:' + get_time() send_masseger(article)
PS:
地点:7#409
时间:2018.5.20 0:53
好困,睡了睡了
YZ,等我的邮件呦~
作者:莫比乌斯的小纸带
链接:https://www.jianshu.com/p/1bf2df029c50
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