Some useful python function

xq8995209

　　邮件发送


两个文件: config.py:配置信息   send_msg.py:发送邮件
　　send_msg.py

#coding=utf-8
import smtplib,config,email,sys
from email.Message import Message
def connect():
"connect to smtp server and return a smtplib.SMTP instance object"
server=smtplib.SMTP(config.smtpserver,config.smtpport)
server.ehlo()
server.login(config.smtpuser,config.smtppass)
return server
def sendmessage(server,to,subj,content):
"using server send a email"
msg = Message()
msg['Mime-Version']='1.0'
msg['From']    = config.smtpuser
msg['To']      = to
msg['Subject'] = subj
msg['Date']    = email.Utils.formatdate()          # curr datetime, rfc2822
msg.set_payload(content)
try:   
failed = server.sendmail(config.smtpuser,to,str(msg))   # may also raise exc
except Exception ,ex:
print Exception,ex
print 'Error - send failed'
else:
print "send success!"
if __name__=="__main__":
#frm=raw_input('From? ').strip()
to=raw_input('To? ').strip()
subj=raw_input('Subj? ').strip()  
print 'Type message text, end with line="."'
text = ''
while True:
line = sys.stdin.readline()
if line == '. ': break
text += line
server=connect()
sendmessage(server,to,subj,text)
　　config.py

smtpserver='mail.xxxx.net'
smtpuser='user@xxx.net'
smtppass='pwd'
smtpport='25'
 　　定时抓取网页内容


#!usr/bin/python
import urllib2,time;
class ErrorHandler(urllib2.HTTPDefaultErrorHandler):
def http_error_default(self, req, fp, code, msg, headers):
result = urllib2.HTTPError(req.get_full_url(), code, msg, headers, fp)
result.status = code
return result
URL='http://www.ibm.com/developerworks/js/ajax1.js'
req=urllib2.Request(URL)
mgr=urllib2.build_opener(ErrorHandler())
while True:
ns=mgr.open(req)
if(ns.headers.has_key('last-modified')):
modified=ns.headers.get('last-modified')
if(ns.code==304):
print '''
NOT MODIFIED
'''
elif(ns.code==200):
print ns.read()
else:
print 'there is an error';
if(not locals().has_key('modified')):
modified=time.time();
req.add_header('If-Modified-Since',modified)
time.sleep(10)