import smtplib
from email.mime.text import MIMEText
from email.utils import formataddr
from email.header import Header
my_sender = 'xxxx@qq.com' # 發(fā)件人郵箱賬號(hào)
my_pass = 'xxxxx'    # 發(fā)件人郵箱密碼(當(dāng)時(shí)申請(qǐng)smtp給的口令)
my_user = 'xxxxxxx@qq.com'  # 收件人郵箱賬號(hào)，我這邊發(fā)送給自己r


def mail():
 ret = True
 try:
  msg = MIMEText(open('a.txt', 'rb').read(), 'base64', 'utf-8')
  msg["Content-Type"] = 'application/octet-stream'
  msg["Content-Disposition"] = 'attachment; filename="a.txt"'

  msg['From']=formataddr(["xxxxx", my_sender]) 
   # 括號(hào)里的對(duì)應(yīng)發(fā)件人郵箱昵稱、發(fā)件人郵箱賬號(hào)
  msg['To']=formataddr(["xxxxxx", my_user])    
   # 括號(hào)里的對(duì)應(yīng)收件人郵箱昵稱、收件人郵箱賬號(hào)
  msg['Subject']= '郵件主題'   
   # 郵件的主題，也可以說是標(biāo)題

  server=smtplib.SMTP_SSL("smtp.qq.com", 465) 
   # 發(fā)件人郵箱中的SMTP服務(wù)器，端口是465
  server.login(my_sender, my_pass) 
   # 括號(hào)中對(duì)應(yīng)的是發(fā)件人郵箱賬號(hào)、郵箱密碼
  server.sendmail(my_sender, [my_user,], msg.as_string()) 
   # 括號(hào)中對(duì)應(yīng)的是發(fā)件人郵箱賬號(hào)、收件人郵箱賬號(hào)、發(fā)送郵件
  server.quit() # 關(guān)閉連接
 except Exception: # 如果 try 中的語句沒有執(zhí)行，則會(huì)執(zhí)行下面的 ret=False
  ret = False
 return ret

ret = mail()
if ret:
 print("郵件發(fā)送成功")
else:
 print("郵件發(fā)送失敗")