python anywhere just says hello from flask
To create a Flask application that displays "Hello from Flask," you can follow the steps outlined below:
- Install Flask:
Flask is a micro web framework for Python. Install Flask by running the command:
pip install flask
Import Flask:
In your Python script, import the Flask module by adding the following line of code at the top:
from flask import Flask
Create an instance of Flask:
- Create an instance of the Flask class by adding the following line of code:
app = Flask(__name__)
The
__name__
parameter is a special Python variable that gets the name of the current module.Define a route:
- Use the
@app.route
decorator to define a route for your application. For example, to define a route that displays "Hello from Flask" when the user visits the root URL, add the following code:
@app.route('/') def hello(): return 'Hello from Flask'
Run the application:
- At the end of your script, add the following lines of code to run the Flask application:
if __name__ == '__main__': app.run()
The
if __name__ == '__main__':
condition ensures that the Flask application is only run if the script is executed directly (not imported as a module).Execute the script:
- Save the script with a
.py
extension, for example,app.py
. - Open your terminal or command prompt and navigate to the directory where the script is saved.
- Run the script by executing the command:
python app.py
You should see output indicating that the Flask application is running, typically on
http://127.0.0.1:5000/
orhttp://localhost:5000/
.Test the application:
- Open a web browser and visit the URL where the Flask application is running.
- In this case, visit
http://127.0.0.1:5000/
orhttp://localhost:5000/
. - You should see the message "Hello from Flask" displayed on the webpage.
By following these steps, you should be able to create a Flask application that displays "Hello from Flask" when accessed through a web browser.