steenzout.barcode.ean module

Module: barcode.ean

Provided barcodes:  EAN-13, EAN-8, JAN

class EAN13(code, writer=None)

Bases: steenzout.barcode.base.Barcode

Class for EAN13 bar codes.

checksum

int

EAN checksum.

Parameters:

• ean (str) – the EAN 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)

Calculates a EAN-13 code checksum.

Parameters:code (str) – EAN-13 code. Returns:the checksum for self.ean. Return type:(integer)

digits = 13

get_fullcode()

name = 'EAN-13'

render(writer_options=None)

to_ascii()

Returns an ascii representation of the barcode.

Returns:ascii representation of the barcode. Return type:(str)

static validate(code)

Calculates a EAN-13 code checksum.

Parameters:

code (str) – EAN-13 code.

Raises:

• IllegalCharacterError in case the bar code contains illegal characters.

• ValueError in case the bar code exceeds its maximum length or

  if the checksum digit doesn’t match.

class EAN8(code, writer=None)

Bases: steenzout.barcode.ean.EAN13

Class for EAN-8 bar codes.

See EAN-13 for details.

Parameters:code (str): EAN-8 number. writer (writer.BaseWriter): instance of writer class to render the bar code.

build()

Builds the barcode pattern from self.ean.

Returns:string representation of the pattern. Return type:(str)

static calculate_checksum(code)

Calculates an EAN-8 code checksum.

Parameters:code (str) – EAN-8 code. Returns:EAN checksum. Return type:(int)

digits = 8

name = 'EAN-8'

static validate(code)

Calculates a EAN-8 code checksum.

Parameters:

code (str) – EAN-8 code.

Raises:

• IllegalCharacterError in case the bar code contains illegal characters.

• ValueError in case the bar code exceeds its maximum length or

  if the checksum digit doesn’t match..

EuropeanArticleNumber13

alias of EAN13

EuropeanArticleNumber8

alias of EAN8

class JAN(code, writer=None)

Bases: steenzout.barcode.ean.EAN13

Class for JAN bar codes.

Parameters:

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

name = 'JAN'

valid_country_codes = [450, 451, 452, 453, 454, 455, 456, 457, 458, 459, 490, 491, 492, 493, 494, 495, 496, 497, 498, 499]

JapanArticleNumber

alias of JAN