python查询数据库并发送邮件

# coding=gbk
import smtplib
import MySQLdb
import datetime
import time
from email.mime.text import  MIMEText

mail_to = ""
mail_host = "smtp.qq.com"
mail_user = "****@qq.com"
mail_pass = "****"
mail_postfix = "qq.com"

def query_indb() :
    db = MySQLdb.connect("****","****","****","****" )
    cursor = db.cursor()
    sql = "select * from **** where UNIX_TIMESTAMP(create_at)>= UNIX_TIMESTAMP() - 86400 and UNIX_TIMESTAMP(create_at) <= UNIX_TIMESTAMP()"
    result = ""
    title = ''
    try:
        cursor.execute(sql)
        results = cursor.fetchall()
        result = result + "" + str(len(results)) + "\n\n"
        num = 1
        title = 'New Rigistered Users Count : ' + str(len(results))
        header = ''
        th = 'New Rigistered Users Count : ' + str(len(results)) + '' \
             '
' \
             '
' \
                    '' \
                        '' \
                        '' \
                        '' \
                        '' \
                        '' \
                        '' \
                        '' \
                    ''
        tr = ''
        for row in results :
            td = ''
            if row[2] is None :
                user_email = " "
            else:
                user_email = row[2]
            if row[3] is None :
                user_company = " "
            else:
                user_company = row[3]
            if row[4] is None :
                phone_number = " "
            else:
                phone_number = row[4]
            td = td + ''
            td = td + ''
            td = td + ''
            td = td + ''
            td = td + ''
            td = td + ''
            td = td + ''
            tr = tr + '' + td + ''
        tr = tr.encode('utf-8')
        body = tr
        tail='
Id
Name
Email
Company
Phone
ServiceLevel
CreateTime
' + str(row[0]) + '
' + str(row[1]) + '
' + user_email + '
' + user_company + '
' + phone_number + '
' + str(row[11]) + '
' + str(row[13]) + '
'
        #将内容拼接成完整的HTML文档
        mail = header + th + body + tail
        return title,mail
    except:
        print "Error: unable to fecth data"
    db.close()
    return result

def send_email(mail_to,sub,content) :
    me="****<****@[email protected]>"
    msg = MIMEText(content,_subtype="html",_charset="gb2312")
    msg['Subject'] = sub
    msg['From'] = me
    msg['To'] = mail_to
    try :
        server = smtplib.SMTP()
        server.connect(mail_host)
        server.ehlo()
        server.starttls()
        server.ehlo()
        server.set_debuglevel(1)
        server.login(mail_user,mail_pass)
        server.sendmail(me,mail_to,msg.as_string())
        server.quit()
        return True
    except Exception, e :
        print str(e)
        return False

def send_email_result(mail_to,sub,content) :
    me="****<****@[email protected]>"
    msg = MIMEText(content,_subtype="plain",_charset="gb2312")
    msg['Subject'] = sub
    msg['From'] = me
    msg['To'] = "****@qq.com"
    try :
        server = smtplib.SMTP()
        server.connect(mail_host)
        server.ehlo()
        server.starttls()
        server.ehlo()
        server.set_debuglevel(1)
        server.login(mail_user,mail_pass)
        server.sendmail(me,mail_to,msg.as_string())
        server.quit()
        return True
    except Exception, e :
        print str(e)
        return False
if __name__ == '__main__' :
    (title,result) = query_indb()
    now_time = datetime.datetime.now()
    yes_time = now_time + datetime.timedelta(days=-1)
    if send_email(mail_to,str(yes_time.strftime('%Y-%m-%d')) + ' ' + title,result) == False :
        send_email_result("****@qq.com","Registered Users Count Email Send Failed","Registered Users Count Email Send Failed")