如何在flask-sqlalchemy中筛选日期时间字段

from flask import Flask
from flask_sqlalchemy import SQLAlchemy
from datetime import datetime

app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'your_database_uri'
db = SQLAlchemy(app)

class User(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(100))
    created_at = db.Column(db.DateTime, default=datetime.utcnow)

# 筛选出创建时间在特定日期之后的用户
users = User.query.filter(User.created_at >= datetime(2022, 1, 1)).all()

# 筛选出创建时间在特定日期范围内的用户
start_date = datetime(2022, 1, 1)
end_date = datetime(2022, 12, 31)
users = User.query.filter(User.created_at >= start_date, User.created_at <= end_date).all()