In this blog we'll learn to creating barcode using python, here we'll be learning creating barcode in 3 different ways:
- Creating barcodes as SVG
- Creating barcodes as Image
- Create barcodes from the commandline
Note: Pillow is necessary for image output (png, jpg), but not for SVG export.
To make a barcode, you only need to know the system (EAN, UPC, etc.) and the code (e.g. for EAN-13: 123456789102). As you can see, the checksum is calculated automatically, thus you don't need it. The checksum is optional on some systems (Code 39), in which case you can use the add checksum keyword parameter (default is True).
Rapsberry Pi Pico Barcode & QR Code Scanner HAT & Breakout - LaunchedCreating barcodes as SVG
You may use the default writer to create barcodes as SVG objects (simply not specify a writer).
>>> import barcode
>>> ean = barcode.get('ean13', '123456789102')
# Now we look if the checksum was added
>>> ean.get_fullcode()
'1234567891026'
>>> filename = ean.save('ean13')
>>> filename
'ean13.svg'
>>> options = dict(compress=True)
>>> filename = ean.save('ean13', options)
>>> filename
'ean13.svgz'In your current working directory, you should have ean13.svg and ean13.svgz. See what happens when you open it.
Creating barcodes as ImageYou must pass the ImageWriter to the get method to produce barcodes as images. The images are produced as PNG without any options.
>>> import barcode
>>> from barcode.writer import ImageWriter
>>> ean = barcode.get('ean13', '123456789102', writer=ImageWriter())
>>> filename = ean.save('ean13')
>>> filename
'ean13.png'python-barcode includes a command-line tool that allows you to produce barcodes without understanding Python. The install script identifies your Python version and updates the executable script with the major version number.
$ python-barcode create "My Text" outfile
New barcode saved as outfile.svg.
$ python-barcode create -t png "My Text" outfile
New barcode saved as outfile.png.
$ python-barcode create -b ean8 -t jpeg "1234567" ean8_out
New barcode saved as ean8_out.jpg.- Code 39
- Code 128
- PZN
- EAN-13
- EAN-8
- JAN
- ISBN-13
- ISBN-10
- ISSN
- UPC-A
class barcode.codex.Code39(code, writer=None, add_checksum=True)
Initializes a new Code39 instance.
Parameters: code : String
Code 39 string without * and checksum (added automatically if add_checksum is True).
writer : barcode.writer Instance
The writer to render the barcode (default: SVGWriter).
add_checksum : Boolean
Add the checksum to code or not (default: True).
get_fullcode
()
Returns the full code, encoded in the barcode.
Returns: Full human readable code. Return type: String
render
(
writer_options=None
,
text=None
)
Renders the barcode using self.writer.
Parameters: writer_options : Dict
Options for self.writer, see writer docs for details.
text : str
Text to render under the barcode.
Returns:
Output of the writers render method.
Class HirarchyNew in version 0.8beta1.
class
barcode.codex.
Code128
(
code
,
writer=None
)
Initializes a new Code128 instance. The checksum is added automatically when building the bars.
Parameters: code : String
Code 128 string without checksum (added automatically).
writer : barcode.writer Instance
The writer to render the barcode (default: SVGWriter).
get_fullcode
()
Returns the full code, encoded in the barcode.
Returns: Full human readable code. Return type: String
render
(
writer_options=None
,
text=None
)
Renders the barcode using self.writer.
Parameters: writer_options : Dict
Options for self.writer, see writer docs for details.
text : str
Text to render under the barcode.
Returns:
Output of the writers render method.
Class Hirachybarcode.codex.
PZN
alias of barcode.codex.PZN7
class
barcode.ean.
EuropeanArticleNumber13
(
ean
,
writer=None
,
no_checksum=False
)
Initializes EAN13 object.
Parameters: ean : String
The ean number as string.
writer : barcode.writer Instance
The writer to render the barcode (default: SVGWriter).
build
()
Builds the barcode pattern from self.ean.
Returns: The pattern as string Return type: String
calculate_checksum
()
Calculates the checksum for EAN13-Code.
Returns: The checksum for self.ean. Return type: Integer
get_fullcode
()
Returns the full code, encoded in the barcode.
Returns: Full human readable code. Return type: String
render
(
writer_options=None
,
text=None
)
Renders the barcode using self.writer.
Parameters: writer_options : Dict
Options for self.writer, see writer docs for details.
text : str
Text to render under the barcode.
Returns:
Output of the writers render method.
to_ascii
()
Returns an ascii representation of the barcode.
Return type: String
Class Hirarchyclass
barcode.ean.
EuropeanArticleNumber8
(
ean
,
writer=None
)
Represents an EAN-8 barcode. See EAN13’s __init__ for details.
Parameters: ean : String
The ean number as string.
writer : barcode.writer Instance
The writer to render the barcode (default: SVGWriter).
build
()
Builds the barcode pattern from self.ean.
Returns: The pattern as string Return type: String
Class Hirarchyclass
barcode.ean.
JapanArticleNumber
(
jan
,
writer=None
)
Initializes JAN barcode.
Parameters: jan : String
The jan number as string.
writer : barcode.writer Instance
The writer to render the barcode (default: SVGWriter).
Class Hirarchyclass
barcode.isxn.
InternationalStandardBookNumber13
(
isbn
,
writer=None
)
Initializes new ISBN-13 barcode.
Parameters: isbn : String
The isbn number as string.
writer : barcode.writer Instance
The writer to render the barcode (default: SVGWriter).
Class Hirarchyclass
barcode.isxn.
InternationalStandardBookNumber10
(
isbn
,
writer=None
)
Initializes new ISBN-10 barcode. This code is rendered as EAN-13 by prefixing it with 978.
Parameters: isbn : String
The isbn number as string.
writer : barcode.writer Instance
The writer to render the barcode (default: SVGWriter).
Class Hirarchyclass
barcode.isxn.
InternationalStandardSerialNumber
(
issn
,
writer=None
)
Initializes new ISSN barcode. This code is rendered as EAN-13 by prefixing it with 977 and adding 00 between code and checksum.
Parameters: issn : String
The issn number as string.
writer : barcode.writer Instance
The writer to render the barcode (default: SVGWriter).
Class Hirarchyclass
barcode.upc.
UniversalProductCodeA
(
upc
,
writer=None
,
make_ean=False
)
Universal Product Code (UPC) barcode.
UPC-A consists of 12 numeric digits.
build
()
Builds the barcode pattern from ‘self.upc’
Returns: The pattern as string Return type: str
calculate_checksum
()
Calculates the checksum for UPCA/UPC codes
Returns: The checksum for ‘self.upc’ Return type: int
get_fullcode
()
Returns the full code, encoded in the barcode.
Returns: Full human readable code. Return type: String
render
(
writer_options=None
,
text=None
)
Renders the barcode using self.writer.
Parameters: writer_options : Dict
Options for self.writer, see writer docs for details.
text : str
Text to render under the barcode.
Returns:
Output of the writers render method.
to_ascii
()
Returns an ascii representation of the barcode.
Return type: str
Class Hirarchy- Create barcode with Python
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