CONN = pymysql.connect(host='127.0.0.1', port=3306, user='root', password='123', database='pooldb', charset='utf8') def task(arg): with LOCK: cursor = CONN.cursor() cursor.execute('select * from tb1') result = cursor.fetchall() cursor.close() print(result) for i in range(...
python app.py 1. 如果一切顺利,你应该在浏览器中看到“Welcome to Flask with MySQL!”的信息。 4. 状态图 以下是应用程序的简单状态图,说明了Flask与MySQL之间的交互: "Load Configurations""Connect to MySQL""Create Tables""Run Flask Application"StartConfiguringConnectingCreatingRunning 5. 小结 在本文中,...
PASSWORD ="123456" DATABASE ="db_test" app.config['SQLALCHEMY_DATABASE_URI'] =f"mysql+pymysql://{USERNAME}:{PASSWORD}@{HOSTNAME}:{PORT}/{DATABASE}?charset=utf8mb4" db = SQLAlchemy(app) withapp.app_context(): withdb.engine.connect()asconn: rs = conn.execute("select 1") print(...
Python flask: mysql query cursor.execute(“SELECT * FROM tasksdb WHERE (id=%s)”, (id,)) returns () Posted by:Alexander Farr Date: April 06, 2020 02:39AM I have set up a SQL database in a Docker container and access it with a Flask program. In my test file, I want to return...
CONN = pymysql.connect(host="127.0.0.1",port=3306,user='root',password='123', database='pooldb',charset='utf8') # 方式二:放在全局,如果是单线程,这样就可以,但是如果是多线程,就得加把锁。这样就成串行的了 # 不支持并发,也不好。所有我们选择用数据库连接池 ...
SQLALCHEMY_DATABASE_URI: the connection string we need to connect to our database. This follows the standard convention:[DB_TYPE]+[DB_CONNECTOR]://[USERNAME]:[PASSWORD]@[HOST]:[PORT]/[DB_NAME] SQLALCHEMY_ECHO: When set to 'True', Flask-SQLAlchemy will log all database activity to Py...
connect(host='127.0.0.1', user='root', password='20191126', port=3306) cursor = db.cursor() cursor.execute("CREATE DATABASE history DEFAULT CHARACTER SET utf8mb4") db.close() 期间忘记了MySQL的密码,所以重置了一下。 网上也有教程,挺简单的。 然后创建表格。 代码语言:javascript 代码运行次数...
Tips:你创建的第一个flask-py文件不能为flask.py,这会与flask本身发生冲突。 启动 可以使用flask命令或者python -m flask来运行这个应用。你需要使用--app选项告诉flask 你的应用名称是什么 代码语言:javascript 代码运行次数:0 运行 AI代码解释 flask--app main run ...
# 导入flask类fromflaskimportFlask# 初始化app=Flask(__name__)# 使用route()装饰器来告诉Flask触发函数的URL。@app.route('/')defindex():return'Hello World!' Tips:你创建的第一个flask-py文件不能为flask.py,这会与flask本身发生冲突。 启动 ...
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