2021-02-23 函数初识

1、初识函数

函数，可以当作是一大堆功能代码的集合

def 函数名():
    函数内编写的代码
    ...
    ...
   
函数名()

举个例子

#  定义名称为info的函数
 def info():
	print('第一个')
	print('第二个')
	print('第三个')
    
 info()  ## 执行函数内的代码

import smtplib
from email.mime.text import MIMEText
from email.utils import formataddr


mail_host = 'XXX'
mail_user = 'XXX'
mail_pass = 'XXX'
sender = 'XXX'
receivers = sender

msg_string = 'TEXT邮件'
msg_html = '<p>Python 发送邮件测试</p>'

message = MIMEText(msg_html,'html','utf-8')

message['Subject'] = '测试主题'
message['From'] = '发件人邮箱地址'
message['To'] = '收件人邮箱地址'

try:
    smtp_sh = smtplib.SMTP()
    smtp_sh.connect(mail_host,25)
    smtp_sh.login(mail_user,mail_pass)
    smtp_sh.sendmail(sender,receivers,message.as_string())
    smtp_sh.quit()
    print('send success')
except smtplib.SMTPException as e:
    print('send error',e)