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我正嘗試使用Flask-Mail發送郵件。我用收件人創建郵件，但當我嘗試發送郵件時收到AssertionError: No recipients have been added。在下面的代碼中，我打印出消息收件人，它們是正確的。我如何解決這個錯誤？嘗試使用Flask-Mail發送郵件時未添加收件人
from flask import Flask
from flask_mail import Message, Mail
app = Flask(__name__)
app.config.update(
DEBUG=True,
MAIL_SERVER='smtp.gmail.com',
MAIL_PORT=465,
MAIL_USE_SSL=True,
MAIL_USERNAME='[email protected]',
MAIL_PASSWORD='mypassword'
)
mail = Mail(app)
@app.route('/')
def hello_world():
msg=Message('hey hey hey', sender='[email protected]', recipients=['[email protected]'])
print(msg.sender, msg.recipients)
# ('[email protected]', ['[email protected]'])
print(msg.send_to)
# set(['[email protected]'])
mail.send_message(msg)
return 'Hello World!'
if __name__ == '__main__':
app.run()
Traceback (most recent call last):
File "C:\Python27\lib\site-packages\flask\app.py", line 1836, in __call__
return self.wsgi_app(environ, start_response)
File "C:\Python27\lib\site-packages\flask\app.py", line 1820, in wsgi_app
response = self.make_response(self.handle_exception(e))
File "C:\Python27\lib\site-packages\flask\app.py", line 1403, in handle_exception
reraise(exc_type, exc_value, tb)
File "C:\Python27\lib\site-packages\flask\app.py", line 1817, in wsgi_app
response = self.full_dispatch_request()
File "C:\Python27\lib\site-packages\flask\app.py", line 1477, in full_dispatch_request
rv = self.handle_user_exception(e)
File "C:\Python27\lib\site-packages\flask\app.py", line 1381, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "C:\Python27\lib\site-packages\flask\app.py", line 1475, in full_dispatch_request
rv = self.dispatch_request()
File "C:\Python27\lib\site-packages\flask\app.py", line 1461, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "C:\Users\Julian\PycharmProjects\flask_mail_test\flask_mail_test.py", line 26, in hello_world
mail.send_message(msg)
File "C:\Python27\lib\site-packages\flask_mail.py", line 503, in send_message
self.send(Message(*args, **kwargs))
File "C:\Python27\lib\site-packages\flask_mail.py", line 493, in send
message.send(connection)
File "C:\Python27\lib\site-packages\flask_mail.py", line 428, in send
connection.send(self)
File "C:\Python27\lib\site-packages\flask_mail.py", line 176, in send
assert message.send_to, "No recipients have been added"
AssertionError: No recipients have been added