Explore the principles of Continuous Integration for Python projects in this EuroPython 2015 conference talk. Learn from Timo Stollenwerk's experience in building a Jenkins-based CI system for Plone, a large-scale open-source project. Discover the importance of frequent code integration and automated verification processes. Gain insights into setting up effective CI systems, including nightly builds, automated testing, acceptance tests, and static code analysis. Understand the significance of maintaining a green build and the potential for scaling to Continuous Delivery. Benefit from practical lessons learned in managing a distributed team of over 340 core developers. Conclude with recommended resources and a Q&A session to deepen your understanding of CI best practices for Python development.