Run a Flask API from CMD
Step 1: Install Flask
pip install Flask
Step 2: Create a Flask app file (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)
Step 3: Open CMD and navigate to the directory containing your app.py
file.
Step 4: Set the Flask app environment variable:
set FLASK_APP=app.py
Step 5: (Optional) Enable debug mode for automatic reloading:
set FLASK_ENV=development
Step 6: Run the Flask app:
flask run
Step 7: Open a web browser and go to http://127.0.0.1:5000/ or http://localhost:5000/ to see your Flask app running.