python操作http，smtp协议。

需要帮人写一段代码，代码很简单，就是读写文件，加上操作http和smtp，自然选择了库一大堆的python实现。

代码如下。感谢google。

gmail的貌似要调用starttls函数才能成功。

import os
import sys
import urllib
import httplib
import string
import smtplib
import email
import mimetypes
from email.MIMEMultipart import MIMEMultipart
from email.MIMEText import MIMEText
from email.utils import COMMASPACE,formatdate

import smtplib

def getRemoteIp(httpurl):
    page = urllib.urlopen(httpurl)
    if 200 != page.getcode():
        return None
    strContent = page.read()
    i = string.find(strContent,"[")
    if i == -1:
            return None
    j = string.find(strContent,"]",i)
    if j == -1:
            return None
    return strContent[i+1:j]

def readFile(filename):
    file = open(filename,'rb')
    if file == None:
        return ""
    strIp = file.readline()
    file.close()
    return strIp

def writeFile(filename,str):
    file = open(filename,'w')
    if file == None:
            return ""
    file.write(str)
    file.close()

def sendMail(authInfo, fromAdd, toAdd, subject, plainText):
    strFrom = fromAdd
    strTo = toAdd
    server = authInfo.get('server')
    user = authInfo.get('user')
    passwd = authInfo.get('password')
    port = authInfo.get('port')

    if not (server and user and passwd) :
        return

    msgRoot = MIMEMultipart('related')
    msgRoot['Subject'] = subject
    msgRoot['From'] = strFrom
    msgRoot['To'] = strTo
    msgRoot['Date'] = formatdate(localtime=True)

    msgAlternative = MIMEMultipart('alternative')
    msgRoot.attach(msgAlternative)

    msgText = MIMEText(plainText,'plain','utf-8')
    msgAlternative.attach(msgText)

    smtp = smtplib.SMTP(server,port)
    smtp.ehlo()
    smtp.starttls()
    smtp.login(user,passwd)
    smtp.sendmail(strFrom, strTo, msgRoot.as_string())
    smtp.quit()
    return


if __name__ == "__main__":
    httpurl = "http://city.ip138.com/ip2city.asp"
    strIP1 = getRemoteIp(httpurl)
    if strIP1 == None:
        print strIP1
        sys.exit()
    strIP2 = readFile("tmpip.dat")
    if strIP2 == None:
            sys.exit()
    writeFile("tmpip.dat",strIP1);
    strIP1 = "234.234.234.234"
    fromaddr = "xloogson@gmail.com"
    toaddr = "xloogson@qq.com"
    authInfo={}
    authInfo['server'] = "smtp.gmail.com"
    authInfo['user'] = "xloogson@gmail.com"
    authInfo['password'] = ""
    authInfo['port'] = 587
    if  strIP2 != "" and strIP1 != "" and strIP1 != strIP2 :
        subject = "check ip"
    	plainText = "ip change!!!" + "before=" + strIP1 + "now:" + strIP2;
    	sendMail(authInfo,fromaddr,toaddr,subject,plainText);

　　

参考链接：

　　http://blog.csdn.net/JGood/article/details/4317416 http模块

　　http://blog.donews.com/maverick/archive/2007/04/22/1159142.aspx smtp模块

　　http://fayaa.com/code/view/11311/full/ smtp模块。