The Python Podcast.__init__

The Python Podcast.__init__

The podcast about Python and the people who make it great

08 April 2019

Version Control For Your Machine Learning Projects - E206

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Version control has become table stakes for any software team, but for machine learning projects there has been no good answer for tracking all of the data that goes into building and training models, and the output of the models themselves. To address that need Dmitry Petrov built the Data Version Control project known as DVC. In this episode he explains how it simplifies communication between data scientists, reduces duplicated effort, and simplifies concerns around reproducing and rebuilding models at different stages of the projects lifecycle. If you work as part of a team that is building machine learning models or other data intensive analysis then make sure to give this a listen and then start using DVC today.


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  • Your host as usual is Tobias Macey and today I’m interviewing Dmitry Petrov about DVC, an open source version control system for machine learning projects


  • Introductions
  • How did you get introduced to Python?
  • Can you start by explaining what DVC is and how it got started?
  • How do the needs of machine learning projects differ from other software applications in terms of version control?
  • Can you walk through the workflow of a project that uses DVC?
    • What are some of the main ways that it differs from your experience building machine learning projects without DVC?
  • In addition to the data that is used for training, the code that generates the model, and the end result there are other aspects such as the feature definitions and hyperparameters that are used. Can you discuss how those factor into the final model and any facilities in DVC to track the values used?
  • In addition to version control for software applications, there are a number of other pieces of tooling that are useful for building and maintaining healthy projects such as linting and unit tests. What are some of the adjacent concerns that should be considered when building machine learning projects?
  • What types of metrics do you track in DVC and how are they collected?
    • Are there specific problem domains or model types that require tracking different metric formats?
  • In the documentation it mentions that the data files live outside of git and can be managed in external storage systems. I’m wondering if there are any plans to integrate with systems such as Quilt or Pachyderm that provide versioning of data natively and what would be involved in adding that support?
  • What was your motivation for implementing this system in Python?
    • If you were to start over today what would you do differently?
  • Being a venture backed startup that is producing open source products, what is the value equation that makes it worthwile for your investors?
  • What have been some of the most interesting, challenging, or unexpected aspects of building DVC?
  • What do you have planned for the future of DVC?

Keep In Touch


  • Tobias
  • Dmitry
    • Go outside and get some fresh air 🙂


The intro and outro music is from Requiem for a Fish The Freak Fandango Orchestra / CC BY-SA

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