how to create a flask app in python

To create a Flask app in Python, you can follow these steps:

1. Install Flask

main.py
pip install flask
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2. Create a file called app.py and import Flask

main.py
from flask import Flask

app = Flask(__name__)
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3. Define the routes using the @app.route decorator

main.py
@app.route("/")
def home():
    return "Hello, World!"

@app.route("/about")
def about():
    return "This is an about page"
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4. Run the app using app.run()

main.py
if __name__ == "__main__":
    app.run(debug=True)
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5. In the terminal, navigate to the directory where app.py is located and run the following command to start the server

main.py
python app.py
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6. Open a web browser and navigate to http://localhost:5000 to view the app.