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Creating a Flask app involves a series of steps. Flask is a lightweight web framework for Python that is widely used for building web applications. Here's a simple example to help you get started:
-
Install Flask:
Ensure you have Python installed on your system. You can install Flask usingpip
, the Python package installer. Open your terminal or command prompt and run the following command:pip install Flask
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Create Your Flask App:
Create a new directory for your Flask app and navigate to it in the terminal.mkdir my_flask_app cd my_flask_app
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Create a Python Script:
Inside your app directory, create a Python script (e.g.,app.py
) with the following content:from flask import Flask app = Flask(__name__) @app.route('/') def hello_world(): return 'Hello, World!' if __name__ == '__main__': app.run(debug=True)
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Run Your Flask App:
In the terminal, run the following command to start your Flask app:python app.py
This will start the development server, and you should see output indicating that the server is running. By default, your app will be accessible at
http://127.0.0.1:5000/
orhttp://localhost:5000/
. -
Access Your App:
Open a web browser and go tohttp://127.0.0.1:5000/
orhttp://localhost:5000/
. You should see the "Hello, World!" message.
Congratulations! You've just created a simple Flask app. From here, you can start building more complex applications by defining additional routes, handling form submissions, and connecting to databases.
Remember that this is a basic example, and as your app grows, you may want to structure it differently, use templates for HTML rendering, and add more features based on your requirements. Refer to the Flask documentation for more detailed information and advanced topics.
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