What does % mean here?

Question

Python

Now I'm reading the Django documentation and I can't figure out what % does in this code:

def detail(request, question_id):
    return HttpResponse("You're looking at question %s." % question_id)

def results(request, question_id):
    response = "You're looking at the results of question %s."
    return HttpResponse(response % question_id)

def vote(request, question_id):
    return HttpResponse("You're voting on question %s." % question_id)

% replaces itself with the value of question_id?

Answer 1

Yes
Manual