trace dependencies in dvc run

[utkarshsingh99]

https://docs.python.org/2/library/trace.html

dvc run requires the user to specify all the dependencies that will be required, that is, all the scripts that will be executed while running the main command.
What if we could find a way to automatically detect those dependency files?
Assuming all the files would be in Python, I think trace could be used when the command is being executed for the first time before adding them to the stage.

[efiop]

Hi @utkarshsingh99 .

That is a very interesting idea! Wouldn't it be too noisy to use everything reported by trace?

Related #1577

[efiop]

Closing as stale