Flask-Debug is an extension for Flask that displays various debugging insights during development.
from flask import Flask
from flask_debug import Debug
app = Flask(__name__)
Debug(app)
app.run(debug=True)It can be manually added but also (using Flask-Appconfig) be automatically instantiated only during development and invisible in production.
Opening http://localhost:5000/_debug will show some information about the application, such as a list of registered views, url maps or configuration values.
See the documentation for more details.