Flask is a micro-web framework written in Python that enables users to create web applications quickly and easily. The framework consists of a number of libraries and tools that are used to build web applications in Python. Flask is easy to install, easy to use, and highly customizable, making it a popular choice for building web applications.
This code example creates a simple Flask app that returns "Hello, World!" when accessed via the root directory (i.e., '/'). The __name__ variable is used to specify the name of the Flask app.
In this code example, two paths are defined using the @app.route decorator. The first route ('/') returns "Index Page", while the second route ('/hello') returns "Hello, World!".
Package Libraries:
The package libraries used in Flask depend on the specific functionality required for the web application being built. Some commonly used libraries include:
- Flask-WTF: a library for working with HTML forms in Flask applications - Flask-SQLAlchemy: a library for working with databases in Flask applications - Flask-Login: a library for working with user authentication in Flask applications - Flask-RESTful: a library for building RESTful APIs in Flask applications - Flask-Mail: a library for working with email in Flask applications
These package libraries can be installed using pip, the Python package installer.
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