jobs from file not found for jobs system

[mblayman]

@jiansongyang left a comment on 729aec7#commitcomment-79276228 that I think it is worth recording as a potential issue.

In #1717, my only goal was to remove the deprecated warning while preserving behavior. I thought there was pretty good test coverage on that area, but I might have missed a usage scenario.

@jiansongyang, you wrote:

What would happen if there happens to be a file (not a module) named "jobs" in an app's root directory?

Can you explain this more? A Python file is a module so I'm not sure I understand the problem.

Can you provide any details about what's happening?