Python Flask Email KeyError KeyError: 'mail'

Question

我在使用 Python Flask 和 Flask-Mail 库时遇到问题。

我遇到一个错误：

KeyError: 'mail'

谁能帮我解决这个问题？

我的代码是：

# -*- coding: utf-8 -*-
from flask import Flask
from flask.ext.mail import Message
from flask.ext.mail import Mail
from ws import app


class Email():  

def __init__(self):
    ""
#
# Enviar el email
#
def enviar_mail(self,subject, sender, recipients, text_body="hola mundo txt", html_body="hola mundo html"):
    app = Flask(__name__)

    app.config.update(dict(
        MAIL_SERVER = 'smtp.gmail.com',
        MAIL_PORT = 465,
        MAIL_USE_TLS = False,
        MAIL_USE_SSL = True,
        MAIL_USERNAME = 'miaccount@gmail.com',
        MAIL_PASSWORD = 'mypasswd$%'
    ))

    mail = Mail(app)
    mail.init_app(app)
    msg = Message("Hello", sender="miaccount@gmail.com",recipients=["myrecipient@hotmail.com"])
    msg.body = "testing"
    msg.html = "<b>testing</b>"
    mail.send(msg)

错误是

KeyError
KeyError: 'mail'
Traceback (most recent call last)
File "/home/javier/python/wszbeltia/lib/python2.7/site-packages/flask/app.py", line 1836, in __call__

mail.send(msg)
File "/home/javier/python/wszbeltia/lib/python2.7/site-packages/flask_mail.py", line 492, in send

message.send(connection)
File "/home/javier/python/wszbeltia/lib/python2.7/site-packages/flask_mail.py", line 427, in send

connection.send(self)
File "/home/javier/python/wszbeltia/lib/python2.7/site-packages/flask_mail.py", line 190, in send

message.as_bytes() if PY3 else message.as_string(),
File "/home/javier/python/wszbeltia/lib/python2.7/site-packages/flask_mail.py", line 381, in as_string

return self._message().as_string()
File "/home/javier/python/wszbeltia/lib/python2.7/site-packages/flask_mail.py", line 307, in _message

**ascii_attachments = current_app.extensions['mail'].ascii_attachments
KeyError: 'mail'**

Answer 1

降级到flask_mail==0.9.0

这似乎是版本 0.9.1 中的回归。

Answer 2

我不能将 flask_mail==0.9.0 与 python 3.8 一起使用，它给了我这个错误： “python 中的 smtplib.server.sendmail 函数引发 UnicodeEncodeError：'ascii' 编解码器无法编码字符”。

我需要使用 flask_mail==0.9.1。使用 flask_mail==0.9.1 我收到“Email KeyError KeyError: 'mail'”错误。

我通过使用解决了“Email KeyError KeyError: 'mail'”错误 “current_app”而不是“app”

from flask import current_app
mail = Mail(current_app)
# send unicode not ascii or latin 
msg.html = message.encode("utf-8")

Python Flask Email KeyError KeyError: 'mail'

Python Flask Email KeyError KeyError: 'mail'

python

email

flask

python-2.7