Flask: building web applications in Python

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    Flask is a lightweight web framework for Python that allows you to build web applications quickly and easily. It is designed to be simple and flexible, and is particularly well-suited for small to medium-sized web applications.

    Installation

    To get started with Flask, you will need to install it using pip:

    pip install flask

    Example: Building a Simple Web Application

    Here's an example of building a simple web application with Flask:

    from flask import Flask

# Create a new Flask instance
app = Flask(__name__)

# Define a route and function to handle the request
@app.route('/')
def hello_world():
    return 'Hello, World!'

# Run the application
if __name__ == '__main__':
    app.run()

    In this example, we create a new Flask instance and define a route for the root URL. When a user visits the root URL, the hello_world function is called and returns the string "Hello, World!". We then run the application using the run method.

    Conclusion

    Flask is a powerful and flexible web framework for Python that allows you to build web applications quickly and easily. Its simplicity and flexibility make it a popular choice for many developers, and its large and active community provides extensive documentation and support.