python 发送带附件的邮件

    特别注意的地方:filespart.add_header("Content-Disposition","attachment",filename=file_name)中Content-Disposition的横杠“-”别写成了“_”,
否则邮件附件的类型会变成*.bin类型文件,我就踩进了这个坑

#encoding=utf-8
import smtplib
import os
import traceback
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
from email.mime.application import MIMEApplication
from config.config import *             #config.config为配置文件,包含参数smtp_host,smtp_from_email,smtp_pwd,smtp_port
class Carry_files_EmailSender(object):
def __init__(self):
self.smtp_host = smtp_host                 # 发送邮件的smtp服务器(QQ邮箱:"smtp.qq.com",163邮箱:"smtp.163.com")
self.smtp_from_email = smtp_from_email         # 邮件发送者的邮箱
self.smtp_pwd = smtp_pwd                 # 邮件发送者的邮箱的授权码
self.smtp_port = smtp_port                 # smtp邮箱的端口,默认是465 def send_email(self, to_email_list, subject, body,files_part=None):
'''
发送邮件
param to_email_list: 收件人邮箱列表,格式["123@qq.com","123@163.com"]
param subject: 邮件主题,格式:"邮件主题"
param body: 邮件内容, 格式:"邮件所说的内容"
param files_part=None 发送的附件,默认不带附件,格式 r"E:\test.xlsx"
'''
msg= MIMEMultipart()          
msg.attach(MIMEText(body, 'plain', 'utf-8'))
msg["From"] = self.smtp_from_email       # 发件人
msg["To"] = ",".join(to_email_list)       # 收件人列表,转换成string,用逗号隔开
msg["Subject"] = subject             # 邮件标题 #上传指定文件构造附件
if os.path.exists(files_part):
filespart=MIMEApplication(open(files_part,'rb').read())
file_name=files_part.split("\\")[-1]     #获取文件名
print("file_name=",file_name)
filespart.add_header("Content-Disposition","attachment",filename=file_name)     #file_name是显示附件的名字,可随便自定义
msg.attach(filespart) else:
print("加载的附件不存在,发送无附件邮件") try:
SmtpSslClient = smtplib.SMTP_SSL(self.smtp_host, self.smtp_port)           # 实例化一个SMTP_SSL对象
Loginer = SmtpSslClient.login(self.smtp_from_email, self.smtp_pwd)           # 登录smtp服务器
print("登录结果:Loginer=", Loginer) # loginRes = (235, b'Authentication successful')
if Loginer[0] == 235:
print("登录成功,code=",Loginer[0])
SmtpSslClient.sendmail(self.smtp_from_email, to_email_list, msg.as_string())     # 发件人,收件人列表,邮件内容
print("mail has been send successfully,message:", msg.as_string())
print("发送成功")
SmtpSslClient.quit()                 # 退出邮箱
else:
print("邮件登录失败,发送失败。code=", Loginer[0], "message=", msg.as_string())
except Exception as e:
traceback.print_exc()
print("邮件发送失败,报错信息:", e) if __name__=="__main__":
senders = Carry_files_EmailSender()
senders.send_email(["123456@qq.com", "123456@163.com"], "测试邮件发送的标题", "这是一个测试邮件发送的内容",r"E:\test\test.txt")
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