Broadly speaking, a web framework consists of a set of libraries and a main handler within which you can build custom code to implement a web application (i.e. an interactive web site). Most web frameworks include patterns and utilities to accomplish at least the following:

• URL Routing
  • Matches an incoming HTTP request to a particular piece of Python code to be invoked
• Request and Response Objects
  • Encapsulates the information received from or sent to a user’s browser
• Template Engine
  • Allows for separating Python code implementing an application’s logic from the HTML (or other) output that it produces
• Development Web Server
  • Runs an HTTP server on development machines to enable rapid development; often automatically reloads server-side code when files are updated

• Django
• Flask
• Tornado
• Falcon
• Pyramid
• Masonite

• https://docs.python-guide.org/scenarios/web/