The following entries in examples/api are not referenced by any code (all others in this directory are referenced by tests/backend_driver.py):

compound_path.py
demo_affine_image.py
engineering_formatter.py
fahrenheit_celsius_scales.py
font_file.py
histogram_path_demo.py
radar_chart.py
sankey_demo_basics.py
sankey_demo_links.py
sankey_demo_old.py
sankey_demo_rankine.py

Edit: Damon again. Editing to include 'sprint'.