小编Lif*_*lex的帖子

我想使用 Outlook 发送电子邮件。代码如下：

import smtplib
from email.message import EmailMessage

msg = EmailMessage()
msg['From'] = '*******'
msg['Subject'] = 'Some subject here'
msg['To'] = '********'
        
msg.set_content('Some text here')

with smtplib.SMTP_SSL('smtp-mail.outlook.com', 587) as smtp:
    smtp.login('******', '****')
    smtp.send_message(msg)
    print('Email sent!')

我收到以下错误：

---------------------------------------------------------------------------
SSLError                                  Traceback (most recent call last)
<ipython-input-8-4d5956f55c88> in <module>
      6 msg.set_content('Some text here')
      7 
----> 8 with smtplib.SMTP_SSL('smtp-mail.outlook.com', 587) as smtp:
      9     smtp.login('sender_email', 'password')
     10     smtp.send_message(msg)

~/anaconda/envs/quant2/lib/python3.6/smtplib.py in __init__(self, host, port, local_hostname, keyfile, certfile, timeout, source_address, context)
   1029             self.context = context
   1030 …

在将项目插入数据库之前，我尝试使用正则表达式来清理一些数据。我无法解决删除字符串末尾尾随特殊字符的问题。

如何编写此正则表达式以仅删除尾随特殊字符？

import re

strings = ['string01_','str_ing02_^','string03_@_', 'string04_1', 'string05_a_']

for item in strings:
  clean_this = (re.sub(r'([_+!@#$?^])', '', item))
  print (clean_this)

outputs this:
string01 # correct
string02 # incorrect because it remove _ in the string
string03 # correct
string041 # incorrect because it remove _ in the string
string05a # incorrect because it remove _ in the string and not just the trailing _