object-relational mapper (ORM), using which classes can be mapped to the database, thereby allowing the object model and database schema to develop in a cleanly decoupled way from the beginning. Audience This tutorial object-relational mapper (ORM), using which, classes can be mapped to the database, thereby allowing the object model and database schema to develop in a cleanly decoupled way from the beginning. As size and performance to those tables. In SQLAlchemy, these two tasks are performed together. This is done by using Declarative system; the classes created include directives to describe the actual database table they are

import Namespace my_signals = Namespace() Now you can create new signals like this: model_saved = my_signals.signal('model-saved') The name for the signal here makes it unique and also simplifies debugging some keyword arguments that are forwarded to the signal subscribers: class Model(object): ... def save(self): model_saved.send(self) Try to always pick a good sender. If you have a class that Connect on Demand Easy Querying Initial Schemas SQLAlchemy in Flask Flask-SQLAlchemy Extension Declarative Manual Object Relational Mapping SQL Abstraction Layer Uploading Files A Gentle Introduction

like this: 84 Chapter 1. User’s Guide Flask Documentation (1.1.x), Release 1.1.4 model_saved = my_signals.signal('model-saved') The name for the signal here makes it unique and also simplifies debugging optionally some keyword arguments that are forwarded to the signal subscribers: class Model(object): ... def save(self): model_saved.send(self) Try to always pick a good sender. If you have a class that is create_app(config_filename): app = Flask(__name__) app.config.from_pyfile(config_filename) from yourapplication.model import db db.init_app(app) from yourapplication.views.admin import admin from yourapplication.views

server Alternatives to token authentication Security in notebook documents The problem Our security model The details of trust Reporting security issues Affected use cases Configuring the notebook frontend the notebook to open a Qt console connected to the same kernel. See also Decoupled two-process model [https://ipython.readthedocs.io/en/stable/overview.html#ipythonzmq] Notebook user interface When Chrome Safari Firefox The is mainly due to the notebook’s usage of WebSockets and the flexible box model. The following browsers are unsupported: Safari < 5 Firefox < 6 Chrome < 13 Opera (any): CSS

server Alternatives to token authentication Security in notebook documents The problem Our security model The details of trust Reporting security issues Affected use cases Configuring the notebook frontend the notebook to open a Qt console connected to the same kernel. See also Decoupled two-process model [https://ipython.readthedocs.io/en/stable/overview.html#ipythonzmq] Notebook user interface When Chrome Safari Firefox The is mainly due to the notebook’s usage of WebSockets and the flexible box model. The following browsers are unsupported: Safari < 5 Firefox < 6 Chrome < 13 Opera (any): CSS

the notebook to open a Qt console connected to the same kernel. See also: Decoupled two-process model 1.3 Notebook user interface When you create a new notebook document, you will be presented with • Safari • Firefox The is mainly due to the notebook’s usage of WebSockets and the flexible box model. The following browsers are unsupported: • Safari < 5 • Firefox < 6 • Chrome < 13 • Opera (any): pre_save_hook [Any] Default: None Python callable or importstring thereof To be called on a contents model prior to save. This can be used to process the structure, such as removing notebook outputs or other

the notebook to open a Qt console connected to the same kernel. See also: Decoupled two-process model 1.3 Notebook user interface When you create a new notebook document, you will be presented with • Safari • Firefox The is mainly due to the notebook’s usage of WebSockets and the flexible box model. The following browsers are unsupported: • Safari < 5 • Firefox < 6 • Chrome < 13 • Opera (any): pre_save_hook [Any] Default: None Python callable or importstring thereof To be called on a contents model prior to save. This can be used to process the structure, such as removing notebook outputs or other

the notebook to open a Qt console connected to the same kernel. See also: Decoupled two-process model 1.3 Notebook user interface When you create a new notebook document, you will be presented with • Safari • Firefox The is mainly due to the notebook’s usage of WebSockets and the flexible box model. The following browsers are unsupported: • Safari < 5 • Firefox < 6 • Chrome < 13 • Opera (any): pre_save_hook [Any] Default: None Python callable or importstring thereof To be called on a contents model prior to save. This can be used to process the structure, such as removing notebook outputs or other

server Alternatives to token authentication Security in notebook documents The problem Our security model The details of trust Reporting security issues Affected use cases Configuring the notebook frontend the notebook to open a Qt console connected to the same kernel. See also Decoupled two-process model [https://ipython.readthedocs.io/en/stable/overview.html#ipythonzmq] Notebook user interface When Chrome Safari Firefox The is mainly due to the notebook’s usage of WebSockets and the flexible box model. The following browsers are unsupported: Safari < 5 Firefox < 6 Chrome < 13 Opera (any): CSS issues

the notebook to open a Qt console connected to the same kernel. See also: Decoupled two-process model 1.3 Notebook user interface When you create a new notebook document, you will be presented with • Safari • Firefox The is mainly due to the notebook’s usage of WebSockets and the flexible box model. The following browsers are unsupported: • Safari < 5 • Firefox < 6 • Chrome < 13 • Opera (any): pre_save_hook [Any] Default: None Python callable or importstring thereof To be called on a contents model prior to save. This can be used to process the structure, such as removing notebook outputs or other