A Flask extension that injects debugging information into rendered HTML pages. Presented as a sidebar with configurable panels of information.

This is a port of the excellent django-debug-toolbar.

Setting up the debug toolbar is simple:

from flask import Flask
from flask_debugtoolbar import DebugToolbarExtension

app = Flask(__name__)
app.config["SECRET_KEY"] = "<replace with a secret key>"

toolbar = DebugToolbarExtension(app)

The toolbar will automatically be injected into Jinja templates when debug mode is enabled.

$ flask -A my_app run --debug