用flask框架连接mysql代码

以下是使用Flask框架连接MySQL数据库的代码示例：

from flask import Flask
from flask_mysqldb import MySQL

app = Flask(__name__)

app.config['MYSQL_HOST'] = 'localhost'
app.config['MYSQL_USER'] = 'your-username'
app.config['MYSQL_PASSWORD'] = 'your-password'
app.config['MYSQL_DB'] = 'your-database'

mysql = MySQL(app)

@app.route('/')
def users():
    cur = mysql.connection.cursor()
    result = cur.execute("SELECT * FROM users")
    users = cur.fetchall()
    cur.close()
    return str(users)

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

您可以根据您的实际情况修改`MYSQL_HOST`，`MYSQL_USER`，`MYSQL_PASSWORD`和`MYSQL_DB`来连接到您的MySQL数据库。在路由函数中，我们使用`mysql.connection.cursor()`来获取游标，执行SQL查询，并使用`cur.fetchall()`来获取结果。最后，我们使用`cur.close()`关闭数据库连接。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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