Python电子邮件KeyError KeyError：'mail‘

Question

我在使用Python水瓶和烧瓶-邮件库时遇到了问题。

我收到了一个错误：

KeyError：“邮件”

有人能帮我解决这个问题吗？

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)

，错误为。

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

降级为flask_mail==0.9.0

在0.9.1版中，这似乎是一个回归。

Answer 2

我不能在python3.8中使用flask_mail==0.9.0，它给了我一个错误："smtplib.server.sendmail函数引发UnicodeEncodeError：'ascii‘编解码器不能对字符进行编码“。

我需要使用flask_mail==0.9.1。通过flask_mail==0.9.1，我得到了"Email KeyError KeyError：'mail'“错误。

我用“电子邮件KeyError KeyError：'mail'”错误解决了"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")