transitfeed
Tools for reading, validating & writing transit schedule info in GTFS
transitfeed helps to make public transit information projects more successful for agencies and other interested parties. It provides a library to help you parse, validate, and generate General Transit Feed Spec (GTFS) feed files. It contains several parts, including TransitFeed (Python package for reading, writing, and validating feeds); Feedvalidator (command line tool that checks a GTFS feed for problems); ScheduleViewer (application for exploring a feed on a map) and more; each with their own set of instructions.