How to generate unique URLs for my web page?

I am working on a web page with a searching function. I want to make my page secure, for example, visitors can not view it unless I send an URL link to them. My idea is to generate unique URLs, then I will send the specific URL to each user, so that can have access to view my web page once. After a POST request, they need a new URL link from me to use that function again. I am using Python and Flask web frame, I am thinking of using UUID in Python to generate unique routes, but not pretty sure if it is a correct way. Any suggestions will be helpful. Thanks