python 定时发送邮件

import smtplib
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
from email.header import Header

def send_email(sender, receiver, text, subject):
    """
    发送纯文本邮件
    :param sender:
    :param receiver:
    :param text:
    :param subject:
    :return:
    """
    mail_host = 'smtp.qq.com'  # qq邮箱服务地址
    smt = smtplib.SMTP()  # #实例化SMTP类，这样就可以调用SMTP对象的方法和属性
    smt.connect(mail_host, '25')  # 连接服务器，第二个参数为端口号
    password = "mmmmmm"  # 邮箱登录密码（需要进入qq邮箱->设置->账号->获取密码）
    try:
        smt.login(sender, password)   # 登录邮箱，第一参数是发件人邮箱账号、第二个为邮箱登录密码
        message = MIMEText(text, 'plain', 'utf-8')  # 实例化一个MIMEText邮件对象，该对象需要写进三个参数，分别是邮件正文，文本格式和编码
        message['Subject'] = Header(subject, 'utf-8')  # 邮件标题
        try:
            smt.sendmail(sender, receiver, message.as_string())  # 发送邮件操作
            print("邮件发送成功")
        except:
            print("邮件发送失败")
    except:
        print("登录失败，请检测邮箱、密码是否正确")
    smt.quit()  # 退出邮箱

import smtplib
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
from email.header import Header

def send_file(sender, receiver, file, subject):
    """
    发送带附件的邮件
    :param sender:
    :param receiver:
    :param data:
    :param subject:
    :return:
    """
    addr = 'smtp.qq.com'
    smt = smtplib.SMTP()
    smt.connect(addr, '25')
    password = "mmmmmm"
    smt.login(sender, password)

    message = MIMEMultipart()
    message['Subject'] = Header(subject, 'utf-8')
    message['From'] = Header(sender, 'utf-8')
    message['To'] = Header(receiver, 'utf-8')
    message.attach(MIMEText("最近一周天气情况", 'plain', 'utf-8'))
    att1 = MIMEText(open(file, 'rb').read(), 'base64', 'utf-8')
    att1['Content-Type'] = 'application/octet-stream'
    att1["Content-Disposition"] = 'attachment, filename="weather.txt'
    message.attach(att1)

    smt.sendmail(sender, receiver, message.as_string())

import smtplib
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
from email.header import Header
import schedule
import time

def job():
    """
    定时发送邮件
    :return:
    """
    file = writer_data(get_data())
    send_file(sender, receiver, file, subject)

schedule.every(2).minutes.do(job)

while True:
    schedule.run_pending()
    time.sleep(2)