Although Fiona is OGR's Python wrapper, Fiona uses a data model that differs from OGR. While OGR uses data sources, layers and features, Fiona uses the term records for accessing geographic features stored in vector data. These are based on GeoJSON features—reading a shapefile with Fiona, you reference a record through one of its keys, using a Python dictionary object. A record has an ID, geometry, and property key.

Let's look at a few Shapely and Fiona code examples.