QR Code generator in Python
PIL - Python Imaging Library (or Pillow)
qr_code = QRCode(error_correction_level='L', mode_name='byte', mask_number=2, data='encoded message')
qr_code.save('qr.png', module_size=5)
This will generate an image file "qr.png" with a QR Code that contains "encoded message" text.
Released under The MIT License.
The word "QR Code" is registered trademark of DENSO WAVE INCORPORATED
http://www.denso-wave.com/qrcode/faqpatent-e.html