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