我的代码有问题,试图使用python在flask中设置SQLAlchemy数据库。代码:
谢谢你的帮助。在
尝试重新安装SQLAlchemy。在
我用的是公司的笔记本电脑,应该没问题吧?在
from flask import Flask, render_template, url_for
from flask_sqlalchemy import SQLAlchemy
from datetime import datetime
app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///test.db'
db = SQLAlchemy(app)
class Todo(db.Model):
id = db.Column(db.Integer, primary_key=True)
content = db.Column(db.String(200), nullable=False)
date_created = db.Column(db.DateTime, default=datetime
def __repr__(self):
return '<Task %r>' % self.id
@app.route('/', methods=['POST', 'GET'])
def index():
return render_template('index.html')
if __name__ == "__main__":
app.run(debug=True)
(env) C:\Users\rodrigs\Documents\PythonFlaskApp>app.py
C:\Users\rodrigs\Documents\PythonFlaskApp\env\lib\site-packages\flask_sqlalchemy\__init__.py:835: FSADeprecationWarning: SQLALCHEMY_TRACK_MODIFICATIONS adds significant overhead and will be disabled by default in the future. Set it to True or False to suppress this warning.
'SQLALCHEMY_TRACK_MODIFICATIONS adds significant overhead and '
Traceback (most recent call last):
File "C:\Users\rodrigs\Documents\PythonFlaskApp\app.py", line 9, in <module>
class Todo(db.Model):
File "C:\Users\rodrigs\Documents\PythonFlaskApp\app.py", line 13, in Todo
date_created = db.Column(db.dateTime, default=datetime.utcnow)
AttributeError: 'SQLAlchemy' object has no attribute 'dateTime'
对于警告:
将“SQLALCHEMY_TRACK_MODIFICATIONS”设置为True/False。最好通过添加下面的一行来判断错误
^{pr2}$在烧瓶应用程序实例化后,即在以下行之后:
对于错误:
有一个打字错误,类型为数据库日期时间. 在
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