flask_mail()发送邮件 in send connection.send(self)错误

Question

flask发送邮件折腾了好久，还是失败，163邮箱，已开启SMTP，连接时用的是独立密钥，TLS是False,SSL是True,然后就出错了，

File "D:\NewFlasky\venv\lib\site-packages\flask_mail.py", line 427, in send connection.send(self)
File "D:\NewFlasky\venv\lib\site-packages\flask_mail.py", line 427, in send connection.send(self)
RuntimeError: maximum recursion depth exceeded

第一句和第二句重复了大概100次，人家都是到下一步才卡壳，我这刚到一半就结束了，好不甘心啊。求大神帮帮新手，谢谢！

Answer 1

个人觉得是程序逻辑的问题和flask没有关系。最好贴下代码块。

Answer 2

注意最后一行的报错信息 RuntimeError: maximum recursion depth exceeded，尝试提高 Recursion limit。

import sys
sys.setrecursionlimit(1000)

数值可以适当调整，逐步提高直到不出错。但要谨慎设置，太高了也会导致崩溃。

参照官方文档说明：

Set the maximum depth of the Python interpreter stack to limit. This limit prevents infinite recursion from causing an overflow of the C stack and crashing Python.

The highest possible limit is platform-dependent. A user may need to set the limit higher when they have a program that requires deep recursion and a platform that supports a higher limit. This should be done with care, because a too-high limit can lead to a crash.

官方文档链接：sys.setrecursionlimit(limit)