python自动通过paramiko检查环节，自动发送邮件写法

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#!/usr/bin/python3
# -*- coding: UTF-8 -*-


import time
import paramiko
import smtplib
from email.mime.text import MIMEText
from email.header import Header

ip = "10.x.x.x"
username = "admin"
passwd = "1"
s = ""
for i in range(100):

    try:
        ssh_client = paramiko.SSHClient()
        ssh_client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
        ssh_client.connect(hostname=ip, port=22345, username=username, password=passwd)
        break
    except:
        logger.warning("建立paramiko连接失败，请检查网络连接".format(ip))
    time.sleep(10)
    if i == 99:
        s = "连接超时，请手动排查"

if s == "":
    stdin, disk_info, stderr = ssh_client.exec_command("df -h")  # linux命令自由发挥
    stdin, stdout, stderr = ssh_client.exec_command("echo 123 > /data/123")
    stdin, inputinfo, stderr = ssh_client.exec_command("ls -l /data/123")
    stdin, stdout, stderr = ssh_client.exec_command("rm -rf /data/123")
    diskin = disk_info.readlines()
    inputin = inputinfo.readlines()
    ssh_client.close()
    try:
        disk_result = "OK" if "/dev/sdb1" in  "".join(diskin) else "FAILED"
    except:
        disk_result = "FAILED"
    try:
        write_result = "OK" if "/data/123" in  "".join(inputin) else "FAILED"
    except:
        write_result = "FAILED"

    s = "/data是否挂载在 sdb1下    ----{}\n    {}\n\n\n\n/data分区是否可读可写    -----{}\n    {}".format(disk_result,"\n    ".join(diskin),write_result,"".join(inputin))

mail_host = "xxx"
mail_password = 'xxxx'

sender = "xxx@xxx.com"
receivers = ['1@b.com','2@b.com','3@b.com']

year='年'
month='月'
day='日'
cc=time.localtime(time.time())
date_to = str(cc.tm_year)+year+str(cc.tm_mon)+month+str(cc.tm_mday)+day
message = MIMEText(s, "plain", "utf-8")
message['From'] = Header("from who", 'utf-8')
message['To'] = Header("to who", 'utf-8')
message['Subject'] = Header('{}环境监测'.format(date_to), 'utf-8')

try:
    smtpObj = smtplib.SMTP()
    smtpObj.connect(mail_host, 25)
    smtpObj.sendmail(sender, receivers, message.as_string())
    smtpObj.quit()  # 关闭连接
    print("查看邮件，以发送成功")
except smtplib.SMTPException:
    print("发送失败")

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