Flask-Mail使用config.from_object（）时无法读取配置

Question

我有两个版本的代码用于发送电子邮件

版本1（W / O外部配置文件）

# app.py
from flask import Flask
from flask_mail import Mail, Message

mail = Mail()

app =Flask(__name__)

app.config['MAIL_SERVER']='smtp.gmail.com'
app.config['MAIL_PORT'] = 465
app.config['MAIL_USERNAME'] = '[email protected]'
app.config['MAIL_PASSWORD'] = 'test'
app.config['MAIL_USE_TLS'] = False
app.config['MAIL_USE_SSL'] = True
print(app.config)
mail.init_app(app)

@app.route("/")
def index():
    msg = Message('Hi', sender = '[email protected]', recipients = ['[email protected]'])
    msg.body = "Hello"
    mail.send(msg)
    return "Sent"

if __name__ == '__main__':
    app.run(debug = True)

此版本发送电子邮件没有问题

版本2（使用from_object（）进行配置）

# app.py
from flask import Flask
from flask_mail import Mail, Message

mail = Mail()

app = Flask(__name__)

app.config.from_object('config.DevelopmentConfig')

# mail = Mail(app)
print(app.config)
mail.init_app(app)

@app.route("/")
def index():
    print('Sending email')
    msg = Message('Tutorial point3', sender = '[email protected]', recipients = ['[email protected]'])
    msg.body = "Hello Flask message sent from Flask-Mail "
    mail.send(msg)
    return "Sent"

if __name__ == '__main__':
    app.run()

下面是配置文件

# config.py

class BaseConfig:
    """Base configuration"""
    DEBUG = False
    TESTING = False
    SQLALCHEMY_TRACK_MODIFICATIONS = False
    SECRET_KEY = 'my_precious'
    MAIL_SERVER = 'smtp.gmail.com'
    MAIL_PORT = 465
    MAIL_USE_SSL = True
    MAIL_USE_TLS = False
    MAIL_USERNAME = '[email protected]'
    MAIL_PASSWORD = 'test'


class DevelopmentConfig(BaseConfig):
    """Development configuration"""
    DEBUG = True

不知何故版本2不起作用，并给我这个错误

smtplib.SMTPAuthenticationError: (535, b'5.7.8 Username and Password not accepted. Learn more at\n5.7.8  https://support.google.com/mail/?p=BadCredentials x4sm75923481pfk.51 - gsmtp')

错误消息说我的凭证是错误的，但我认为这不正确，因为在版本1中我使用完全相同的用户名和密码，它工作正常。

为了确定我的config.py中的配置是否已加载，我做了print(app.config)（虽然我不确定它是否是一个好方法）并且看起来我的配置正确加载到我的烧瓶应用程序。

<Config {'DEBUG': True, 'TESTING': False, 'PROPAGATE_EXCEPTIONS': None, 'PRESERVE_CONTEXT_ON_EXCEPTION': None, 'SECRET_KEY': 'my_precious', 'PERMANENT_SESSION_LIFETIME': datetime.timedelta(31), 'USE_X_SENDFILE': False, 'LOGGER_NAME': '__main__', 'LOGGER_HANDLER_POLICY': 'always', 'SERVER_NAME': None, 'APPLICATION_ROOT': None, 'SESSION_COOKIE_NAME': 'session', 'SESSION_COOKIE_DOMAIN': None, 'SESSION_COOKIE_PATH': None, 'SESSION_COOKIE_HTTPONLY': True, 'SESSION_COOKIE_SECURE': False, 'SESSION_REFRESH_EACH_REQUEST': True, 'MAX_CONTENT_LENGTH': None, 'SEND_FILE_MAX_AGE_DEFAULT': datetime.timedelta(0, 43200), 'TRAP_BAD_REQUEST_ERRORS': False, 'TRAP_HTTP_EXCEPTIONS': False, 'EXPLAIN_TEMPLATE_LOADING': False, 'PREFERRED_URL_SCHEME': 'http', 'JSON_AS_ASCII': True, 'JSON_SORT_KEYS': True, 'JSONIFY_PRETTYPRINT_REGULAR': True, 'JSONIFY_MIMETYPE': 'application/json', 'TEMPLATES_AUTO_RELOAD': None, 'MAIL_PASSWORD': 'test', 'MAIL_PORT': 465, 'MAIL_SERVER': 'smtp.gmail.com', 'MAIL_USERNAME': '[email protected]', 'MAIL_USE_SSL': True, 'MAIL_USE_TLS': False, 'SQLALCHEMY_TRACK_MODIFICATIONS': False}>

提前谢谢你的帮助！

Update1：​​修改标题以便更好地理解。此外，当我测试两个版本时，我使用了实际的gmail地址和密码，但在代码片段中，我将所有凭据替换为“test”以保护我的帐户

Answer 1

版本2中有一个拼写错误。我从this flask official snippets复制了代码，所以我希望这个答案可以帮助人们陷入同样的​​陷阱。

class BaseConfig:
    """Base configuration"""
    DEBUG = False
    TESTING = False
    SQLALCHEMY_TRACK_MODIFICATIONS = False
    SECRET_KEY = 'my_precious'
    MAIL_SERVER = 'smtp.gmail.com' # <-- Here
    MAIL_PORT = 465
    MAIL_USE_SSL = True
    MAIL_USE_TLS = False
    MAIL_USERNAME = '[email protected]'
    MAIL_PASSWORD = 'test'


class DevelopmentConfig(BaseConfig):
    """Development configuration"""
    DEBUG = True