监测cpu 硬盘 内存邮件报警

import psutil
import time
import yagmail

def sendmail(subject,contents):
    yag = yagmail.SMTP(user='15534828589@163.com',password='tym0310',host='smtp.163.com')
    yag.send(to='15534828589@163.com',subject=subject,contents=contents)
    yag.close()

def cpu():
    cpu = psutil.cpu_percent(1)
    return {'cpu_percent':cpu}
def mem():
    mem_total = psutil.virtual_memory()[0]
    mem_percent = psutil.virtual_memory()[2]
    return {'mem_total':int(mem_total/1024/1024),'mem_percent':mem_percent}
def disk():
    disk_total = psutil.disk_usage('c:')[0]
    disk_percent = psutil.disk_usage('c:')[3]
    return {'disk_total':int(disk_total/1024/1024/1024),'disk_percent':disk_percent}
def main():
    info = {}
    info.update(cpu())
    info.update(mem())
    info.update(disk())

    msg = '''
    cpu使用率:%s%%
    内存使用率:%s%%
    硬盘使用率:%s%%
    
    内存总大小:%sM
    硬盘总大小:%sG
    ''' %  (info['cpu_percent'],info['mem_percent'],info['disk_percent'],info['mem_total'],info['disk_total'])
    if info['cpu_percent'] > 5:
        sendmail('cpu报警',msg)
    if info['mem_percent'] > 50:
        sendmail('内存报警',msg)
    if info['disk_percent'] > 50:
        sendmail('硬盘报警',msg)
while True :
    if __name__ == '__main__':
        main()
        time.sleep(60)