Security Considerations — Flask Documentation (3.0.x)
Security Considerations¶ Web applications usually face all kinds of security problems and it’s very hard to get everything right. Flask tries to solve a few of these things for you, but there are a couple more you have to take care of yourself. Cross-Site Scripting (XSS)¶ Cross site scripting is the concept of injecting arbitrary HTML (and with it JavaScript) into the context of a website. To reme
Background Tasks with Celery — Flask Documentation (3.0.x)
Background Tasks with Celery¶ If your application has a long running task, such as processing some uploaded data or sending email, you don’t want to wait for it to finish during a request. Instead, use a task queue to send the necessary data to another process that will run the task in the background while the request returns immediately. Celery is a powerful task queue that can be used for simple
Application Factories — Flask Documentation (3.0.x)
Application Factories¶ If you are already using packages and blueprints for your application (Modular Applications with Blueprints) there are a couple of really nice ways to further improve the experience. A common pattern is creating the application object when the blueprint is imported. But if you move the creation of this object into a function, you can then create multiple instances of this ap
Class-based Views — Flask Documentation (3.0.x)
Class-based Views¶ This page introduces using the View and MethodView classes to write class-based views. A class-based view is a class that acts as a view function. Because it is a class, different instances of the class can be created with different arguments, to change the behavior of the view. This is also known as generic, reusable, or pluggable views. An example of where this is useful is de
Testing Flask Applications — Flask Documentation (3.0.x)
Testing Flask Applications¶ Flask provides utilities for testing an application. This documentation goes over techniques for working with different parts of the application in tests. We will use the pytest framework to set up and run our tests. The tutorial goes over how to write tests for 100% coverage of the sample Flaskr blog application. See the tutorial on tests for a detailed explanation of
URL Route Registrations - API — Flask 0.9 documentation
API¶ This part of the documentation covers all the interfaces of Flask. For parts where Flask depends on external libraries, we document the most important right here and provide links to the canonical documentation. Application Object¶ class flask.Flask(import_name, static_url_path=None, static_folder='static', static_host=None, host_matching=False, subdomain_matching=False, template_folder='temp
Design Decisions in Flask — Flask Documentation (3.0.x)
Design Decisions in Flask¶ If you are curious why Flask does certain things the way it does and not differently, this section is for you. This should give you an idea about some of the design decisions that may appear arbitrary and surprising at first, especially in direct comparison with other frameworks. The Explicit Application Object¶ A Python web application based on WSGI has to have one cent
Templates — Flask Documentation (3.0.x)
Templates¶ Flask leverages Jinja2 as its template engine. You are obviously free to use a different template engine, but you still have to install Jinja2 to run Flask itself. This requirement is necessary to enable rich extensions. An extension can depend on Jinja2 being present. This section only gives a very quick introduction into how Jinja2 is integrated into Flask. If you want information on
Welcome | Flask (A Python Microframework)
Welcome to Flask¶ Welcome to Flask’s documentation. Get started with Installation and then get an overview with the Quickstart. There is also a more detailed Tutorial that shows how to create a small but complete application with Flask. Common patterns are described in the Patterns for Flask section. The rest of the docs describe each component of Flask in detail, with a full reference in the API
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Pocoo Styleguide — Flask Documentation (1.1.x)
MongoDB with MongoKit — Flask Documentation (1.1.x)
AJAX with jQuery — Flask Documentation (3.0.x)