app.route()

app.route('/user') 
.get((req, res, next) => { 
    res.send('GET request called'); 
}) 
.post((req, res, next) => { 
res.send('POST request called'); 
}) 
.all((req, res, next) => { 
res.send('Other requests called'); 
}) 

@app.route("/route/to/page")
def what_to_display_when_someone_goes_here():
    return("Whatever.")