First export a list of attendees from Eventbright in CSV format.
Then generate a list of qrcodes for the attendees using qrcodeGen.py:
$ python qrcodeGen.py --height=500 --width=500 --attendees='./attendees/Attendees-2883876753.csv' --output='./qrcodes/'
Finally run nametags.py to generate the nametags themselves:
$ python nametags.py --logos='./logos/' --attendees='./attendees/Attendees-2883876753.csv' --qrcodes='./qrcodes/' --output='./nametags/'