Python爬虫学习

来源：互联网发布：linux怎么退出vi 编辑：程序博客网时间：2024/05/01 06:26

这次任务是

写一个程序，以一定时间频率刷新apple store，判断货物有/无状态；当有货的时候，发一个短信给你手机。

1.首先在网站 http://store.apple.com/hk-zh/buy-iphone/iphone5s上找出所需要的内容。

2.编写相应的代码爬出所要内容。

url = 'http://store.apple.com/hk-zh/buy-iphone/iphone5s'while 1:    html = requests.get(url)    reg = '{"dimensionColor":"(.*?)","dimensionCapacity":"(.*?)","partNumber":".*?","price":"(.*?)","displayShippingQuote":"(.*?)".*?}'    r=re.compile(reg)    mes = r.findall(html.text)    for i in mes:        print i[0]+'   ',i[1]+'   ','HK$'+i[2]+'   '+i[3]        if i[3].encode('utf-8') == '有現貨':              text = 'iphone5s有现货:'+'  颜色：'+i[0].encode('utf-8')+'  内存空间：'+i[1].encode('utf-8')+'  价格：HK$'+i[2].encode('utf-8')

3.发送短信还不是很清楚，不过发送邮件的方法通过查询可以做到，相应代码如下：

import smtplibimport emailimport mimetypesfrom email.mime.multipart import MIMEMultipartfrom email.mime.text import MIMETextdef sendmail(to_list,sub,con):  """发送邮件  """# 设置服务器名称、用户名、密码以及邮件后缀s  mail_host="smtp.163.com"  mail_user="*****@163.com"  mail_pass="*****"  mail_postfix="mail.163.com"  me = mail_user+"<"+mail_user+"@"+mail_postfix+">"  msg = MIMEMultipart('related')  msg['Subject'] = email.Header.Header(sub,'utf-8')  msg['From'] = me  msg['To'] = ";".join(to_list)  msg.preamble = 'This is a multi-part message in MIME format.'  msgAlternative = MIMEMultipart('alternative')  msgText = MIMEText(con, 'plain', 'utf-8')  msgAlternative.attach(msgText)  msg.attach(msgAlternative)  try:    s = smtplib.SMTP()    s.connect(mail_host)    s.login(mail_user,mail_pass)    s.sendmail(me, to_list, msg.as_string())    s.close()  except Exception,e:    return False  return True

4.通过将两个方法结合便可以初步完成目标。最后可以用time.sleep()方法来以一定频率刷新。

0 0