Hackforge Academy

Explanation

Import Flask and create an application instance using the Flask class.

Code:

from flask import Flask

app = Flask(__name__)

Explanation

Create a route using the @app.route decorator and return a response.

Code:

@app.route('/')
def home():
    return 'Hello Flask!'

Explanation

Run the application using Flask's development server.

Code:

if __name__ == '__main__':
    app.run(debug=True)

Explanation

The browser sends a request to the root URL and Flask executes the function mapped to that route.

Code:

GET /
  |
  v
home()
  |
  v
'Hello Flask!'

Explanation

Debug mode automatically reloads the development server when code changes and provides debugging information during development.

Code:

app.run(
    debug=True,
    host='127.0.0.1',
    port=5000
)