Overview

Elaphe

Elaphe is a python binding of Barcode Writer In Pure PostScript (http://www.terryburton.co.uk/barcodewriter/). It generates barcode symbol as PostScript code fragment using BWIPP. The generated code is then embedded in encapsulated PostScript image which can be handled by PIL.

Prerequisites

  • Python 2.7 or later (functional decorators, ternary operator, and generator expressions are used).

    Note

    Except setup.py test, code may still work on 2.5-2.6.

  • If you want to render barcode into bitmap image, EpsImagePlugin of Python Imaging Library (http://www.pythonware.com/products/pil) or Pillow is required. Note that EpsImagePlugin requires Ghostscript is correctly installed.

Simple Usage

The following example:

>>> from elaphe import barcode
>>> barcode('qrcode',
...         'Hello Barcode Writer In Pure PostScript.',
...         options=dict(version=9, eclevel='M'),
...         margin=10, data_mode='8bits'))   # Generates PIL.EpsImageFile instance
<PIL.EpsImagePlugin.EpsImageFile ... at ...>
>>> _.show() # Show rendered bitmap

will invoke some viewer which shows a QRcode symbol with 10px margin.

Remember, barcode() returns PIL image object.