PubCode

PubCode is a library that encodes barcodes and allows easy access to the data required to render the barcode. It can optionally use PIL to render the barcode or to provide a data URL containing a single pixel high PNG barcode which can be resized by a browser to a more usefull size.

Supported barcodes

• Code128

Usage

>>> from pubcode import Code128
>>> barcode = Code128('Hello!', charset='B')

You can access the data required to render the barcode easily and intuitively.

>>> barcode.bars
'2112142311131122142211142211141341112221221212412331112'
>>> barcode.modules  # doctest: +ELLIPSIS
[0, 0, 1, 0, 1, 1, 0, 1, 1, 1, 1, 0, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, ...]

You can generate PIL.Image objects from barcodes.

>>> barcode.image()  # doctest: +ELLIPSIS
<PIL.Image.Image image mode=1 size=121x1 at ...>
>>> barcode.image(height=10, module_width=2)  # doctest: +ELLIPSIS
<PIL.Image.Image image mode=1 size=242x10 at ...>

You can also generate data URLs.

>>> barcode.data_url()  # doctest: +ELLIPSIS
'data:image/png;base64,...'

You can also control the exact way in which the barcode is encoded, which allows you to control the size of the resulting barcode.

>>> barcode = Code128('12\x00x\x01', charset='CABA')
>>> barcode.symbols
['[Start Code C]', '12', '[Code A]', '\x00', '[Shift B]', 'x', '\x01', '\x15', '[Stop]']