Infer nosetests in python project

I was reading on that

CircleCI automatically runs tox when we find a tox.ini file, and runs nosetests when we find a file. If you are using Django, then Circle will run test.

What is the file supposed to look like for inferred nosetests?

I can find no resource or documentation about such a file, and would like to use the inferred nosetesting. Are there any example projects that have inferred nosetesting properly set up?

See if this links help: