How could I make the blueprint can work

I want to seperate all routes into sub-modules,

and i will run python web.py in the root folder

I hope I can access the route /hihi under sub_1 module by http://localhost:8888/hihi

However I got Not found error

Exception

Not Found
The requested URL was not found on the server. If you entered the URL manually please check your spelling and try again.

Name		Name	Last commit message	Last commit date
Latest commit History 2 Commits
sub_1		sub_1
.DS_Store		.DS_Store
.python-version		.python-version
README.md		README.md
web.py		web.py