steenzout.barcode.isxn module

ISXN module.

Provided barcodes:  ISBN-13, ISBN-10, ISSN

This module provides some special codes, which are no standalone bar codes.

All codes where transformed to EAN-13 barcodes.

In every case, the checksum is new calculated.

Example:

>>> from steenzout.barcode import get_barcode
>>> ISBN = get_barcode('isbn10')
>>> isbn = ISBN('0132354187')
>>> unicode(isbn)
u'0132354187'
>>> isbn.get_fullcode()
u'9780132354189'
>>> # Test with wrong checksum
>>> isbn = ISBN('0132354180')
>>> unicode(isbn)
u'0132354187'

class ISBN10(code, writer=None)

Bases: steenzout.barcode.isxn.ISBN13

Class for ISBN-10 bar codes.

Parameters:

• code (str) – ISBN number.
• writer (writer.BaseWriter) – instance of writer class to render the bar code.

static calculate_checksum(code)

digits = 10

ean13()

Returns the EAN-13 representation of the ISBN-10 bar code.

Returns:EAN-13 representation of the bar code. Return type:(EAN13)

isbn13()

Returns the ISBN-13 representation of the ISBN-10 bar code.

Returns:ISBN-13 representation of the bar code. Return type:(ISBN13)

name = 'ISBN-10'

static validate(code)

class ISBN13(isbn, writer=None)

Bases: steenzout.barcode.ean.EAN13

Class for ISBN-13 bar codes.

Parameters:

• isbn (str) – ISBN number.
• writer (writer.BaseWriter) – instance of writer class to render the bar code.

static calculate_checksum(code)

digits = 13

name = 'ISBN-13'

static validate(code)

class ISSN(issn, writer=None)

Bases: steenzout.barcode.ean.EAN13

Class for ISSN bar codes.

This code is rendered as EAN-13 by prefixing it with 977 and adding 00 between code and checksum.

Parameters:

• issn (str) – issn number.
• writer (writer.BaseWriter) – instance of writer class to render the bar code.

build()

Builds the barcode pattern from self.ean.

Returns:The pattern as string. Return type:(str)

static calculate_checksum(code)

digits = 8

ean13()

Returns the EAN-13 representation of the ISSN bar code.

Returns:EAN-13 representation of the bar code. Return type:(EAN13)

name = 'ISSN'

static validate(code)

InternationalStandardBookNumber10

alias of ISBN10

InternationalStandardBookNumber13

alias of ISBN13

InternationalStandardSerialNumber

alias of ISSN