发送的是带附件的邮件，发送完成后，去检查发现，附件变成二进制文件了
出错的代码主要是这一句：
att1["Content-Disposition"] = ‘attachment; filename="test.txt"‘
只要改正这里就可以了
问题代码
att1 = MIMEText(open(‘test.txt‘, ‘rb‘).read(), ‘base64‘, ‘utf-8‘) att1["Content-Type"] = ‘application/octet-stream‘ att1["Content-Disposition"] = ‘attachment; filename="test.txt"‘ message.attach(att1)
改正后的代码
att1 = MIMEText(open(‘txt.txt‘, ‘rb‘).read(), ‘base64‘, ‘utf-8‘) att1["Content-Type"] = ‘application/octet-stream‘ att1.add_header(‘Content-Disposition‘, ‘attachment‘, filename=‘txt.txt‘) msg.attach(att1)
原文：https://www.cnblogs.com/shiyixirui/p/14692151.html