PYQR - A pure Python QR-Code Generator

Author : Hans Christian von Stockhausen [hc at vst dot io] Date : 2010-08-09 Web : http://QR-CODE.co.za http://twitter.com/photocode http://github.com/hcvst/pyqr

This is a pre alpha release /!\

One can generate the following codes: 1-M, 1-H, 2-L, 3-L Alphanumeric and binary encoding are supported. Note, that alphanumeric mode is NOT casesensitive.

EXAMPLES

To save a qr code to file.

import qrcode qrc = qrcode.QRCode() qrc.encode("HTTP://QR-CODE.CO.ZA") img = qrc.to_image() img.save('./code.png')

To display a qr code as text.

import qrcode qrc = qrcode.QRCode() qrc.encode("HTTP://QR-CODE.CO.ZA") s = qrc.to_string(on='g') # g rendered as black box when font set to Webdings print(s)

TODO

• update testcases
• clean up, refactor rewrite
  • validate input lengths
  • encapsule the various specification tables
  • look into the bitlist helper
  • use appends instead of concats with lists
• make code more robust or at least crash rather than producing garbage
• optimal mask selection (currently 011 is used)
• add support for version > 3
• automatically select version that best fits data if none specified
• add support for microqr

LIMITATIONS

Too many to list

KNOWN ISSUES

Generating a 1-M for too long input results in a code that crashes the Android barcode scanner. Probably due to some incorrect padding (0000 and 236,17) on my side.

COPYRIGHT & LICENSE

The file ffield.py is copyright Emin Martinian, 2002. See ffield.py for license terms. All other files are copyright Hans Christian von Stockhausen, 2010. See LICENSE file for terms.