The world’s fastest GTFS validator. Catch errors instantly before they reach Google Maps. Runs entirely on your device-your data never leaves your computer.
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Inspired by the official standards, rebuilt for the modern era.
The easiest way to validate feeds on your machine.
Integrate ultra-fast validation into your ETL pipelines.
pip install gtfs-guru
import gtfs_guru
report = gtfs_guru.validate("data.zip")
if not report.is_valid:
print(f"Found {report.error_count} errors")
report.save_html("report.html")
cargo install gtfs-guru-cli
gtfs-guru -i ./feed.zip -o ./dist
# Output JSON for CI/CD
gtfs-guru --json -i feed.zip | jq .
Here’s a useful, straightforward guide for working with MAME 0.239 ROMs — whether you’re setting up a fresh install or adding them to an existing MAME setup.
mame.ini and change video to opengl or bgfx.core rendering, reduce frame_delay to 0 if experiencing low frames.Place the CHD: Move the .chd file into that specific subfolder. The main ROM zip file should still stay in the root of the roms folder. 3. BIOS and Device Files mame 0239 roms install
→ Use Available tab → Type game name → Press Enter. Here’s a useful, straightforward guide for working with
2. Locate your roms folder
Inside your MAME 0.239 installation directory, find the folder named roms. If it doesn’t exist, create it. Open mame
C:\MAME (Windows) or /home/user/mame (Linux/macOS)mame -rompath C:\path\to\your\roms