ddop is a Python package for data-driven operations management (DDOM). Among other things, it includes well-established DDOM algorithms, as well as standard benchmark datasets. The application programming interface (API) of ddop is designed to be consistent, easy-to-use, and accessible even for non-experts. With only a few lines of code one can: Apply and compare well-established DDOM models. Test new developed models on benchmark datasets provided in the package.