@app.route('/')
def view_landing_page():
 tracking_enabled = ('HTTPBIN_TRACKING' in os.environ)
 return render_template('index.html', tracking_enabled=tracking_enabled)

@ app . route ( '/' ) def view_landing_page ( ) : tracking_enabled = ( 'HTTPBIN_TRACKING' in os . environ ) return render_template ( 'index.html' , tracking_enabled = tracking_enabled )
generates landing page .