### Install python-barcode

Source: https://python-barcode.readthedocs.io/en/stable/_sources/getting-started.rst.txt

Install the library using pip. For image export support, include the 'images' extra.

```shell
pip install python-barcode
```

```shell
pip install "python-barcode[images]"
```

--------------------------------

### Command Line Barcode Generation

Source: https://python-barcode.readthedocs.io/en/stable/_sources/getting-started.rst.txt

Examples of using the python-barcode CLI to create barcodes from the command line, including options for text and image format.

```console
$ # Save a barcode to outfile.svg:
$ python-barcode create "123456789000" outfile -b ean --text "text to appear under barcode"
$ # Generate a PNG (Require Pillow):
$ python-barcode create -t png "My Text" outfile
$ python-barcode --help
usage: python-barcode [-h] [-v] {create,list} ...

Create standard barcodes via cli.

optional arguments:
  -h, --help     show this help message and exit
  -v, --version  show program's version number and exit

Actions:
  {create,list}
    create       Create a barcode with the given options.
    list         List available image and code types.

Image output enabled, use --type option to give image format (png, jpeg, ...).
$
```

--------------------------------

### Interactive PNG Generation

Source: https://python-barcode.readthedocs.io/en/stable/getting-started.html

Shows how to generate an EAN13 barcode to a PNG file using ImageWriter interactively. Also demonstrates using the `generate` function.

```python
>>> import barcode
>>> from barcode.writer import ImageWriter
>>> EAN = barcode.get_barcode_class('ean13')
>>> my_ean = EAN('5901234123457', writer=ImageWriter())
>>> fullname = my_ean.save('ean13_barcode')
>>> fullname
'ean13_barcode.png'
>>> from io import BytesIO
>>> fp = BytesIO()
>>> my_ean.write(fp)
>>> my_ean
<EuropeanArticleNumber13('5901234123457')>
>>> with open("path/to/file", "wb") as f:
...     my_ean.write(f)  # Pillow (ImageWriter) produces RAW format here
...
>>> from barcode import generate
>>> name = generate('EAN13', '5901234123457', output='barcode_svg')
>>> name
'barcode_svg.svg'
>>> fp = BytesIO()
>>> generate('EAN13', '5901234123457', writer=ImageWriter(), output=fp)
>>>
```

--------------------------------

### Generate Compressed SVG (SVGZ)

Source: https://python-barcode.readthedocs.io/en/stable/_sources/writers.rst.txt

Demonstrates how to save a barcode as a compressed SVG file by setting the 'compress' option to True. The filename extension will change to .svgz.

```pycon
>>> 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'
```

--------------------------------

### Saving a compressed SVG (SVGZ)

Source: https://python-barcode.readthedocs.io/en/stable/writers.html

Demonstrates how to save a barcode as a compressed SVG file by setting the 'compress' option to True. The filename extension changes to .svgz for compressed files.

```python
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'
```

--------------------------------

### Command Line Barcode Generation

Source: https://python-barcode.readthedocs.io/en/stable/getting-started.html

Utilize the python-barcode CLI to create barcodes from the command line. Supports saving to SVG, generating PNGs, and displaying help information.

```bash
$ # Save a barcode to outfile.svg:
$ python-barcode create "123456789000" outfile -b ean --text "text to appear under barcode"
$ # Generate a PNG (Require Pillow):
$ python-barcode create -t png "My Text" outfile
$ python-barcode --help
```

--------------------------------

### Interactive PNG Barcode Generation

Source: https://python-barcode.readthedocs.io/en/stable/_sources/getting-started.rst.txt

Demonstrates interactive generation of an EAN13 barcode to a PNG file using the python interpreter and ImageWriter.

```pycon
>>> import barcode
>>> from barcode.writer import ImageWriter
>>> EAN = barcode.get_barcode_class('ean13')
>>> my_ean = EAN('5901234123457', writer=ImageWriter())
>>> fullname = my_ean.save('ean13_barcode')
>>> fullname
'ean13_barcode.png'
>>> from io import BytesIO
>>> fp = BytesIO()
>>> my_ean.write(fp)
>>> my_ean
<EuropeanArticleNumber13('5901234123457')>
>>> with open("path/to/file", "wb") as f:
...     my_ean.write(f)  # Pillow (ImageWriter) produces RAW format here
... 
>>> from barcode import generate
>>> name = generate('EAN13', '5901234123457', output='barcode_svg')
>>> name
'barcode_svg.svg'
>>> fp = BytesIO()
>>> generate('EAN13', '5901234123457', writer=ImageWriter(), output=fp)
>>>
```

--------------------------------

### UPC-A

Source: https://python-barcode.readthedocs.io/en/stable/_sources/supported-formats.rst.txt

Documentation for the UPC-A (Universal Product Code A) barcode format.

```APIDOC
## UPC-A

### Description
Supports the UPC-A (Universal Product Code A) barcode symbology.

### Class
`barcode.upc.UniversalProductCodeA`

### Members
(See `autoclass` documentation for details on available members.)
```

--------------------------------

### Generate Image Barcode to File

Source: https://python-barcode.readthedocs.io/en/stable/_sources/getting-started.rst.txt

Generate an EAN13 barcode and write it to a file named 'somefile.jpeg' using ImageWriter.

```python
with open("somefile.jpeg", "wb") as f:
    EAN13("100000011111", writer=ImageWriter()).write(f)
```

--------------------------------

### Interactive SVG Barcode Generation

Source: https://python-barcode.readthedocs.io/en/stable/_sources/getting-started.rst.txt

Demonstrates interactive generation of an EAN13 barcode to an SVG file using the python interpreter.

```pycon
>>> import barcode
>>> barcode.PROVIDED_BARCODES
['code128', 'code39', 'ean', 'ean13', 'ean14', 'ean8', 'gs1', 'gs1_128', 'gtin', 'isbn', 'isbn10', 'isbn13', 'issn', 'itf', 'jan', 'pzn', 'upc', 'upca']
>>> EAN = barcode.get_barcode_class('ean13')
>>> EAN
<class 'barcode.ean.EuropeanArticleNumber13'>
>>> my_ean = EAN('5901234123457')
>>> my_ean
<EuropeanArticleNumber13('5901234123457')>
>>> fullname = my_ean.save('ean13_barcode')
>>> fullname
'ean13_barcode.svg'
>>>
```

--------------------------------

### PZN7 (PZN)

Source: https://python-barcode.readthedocs.io/en/stable/_sources/supported-formats.rst.txt

Documentation for the PZN7 barcode format, also known as PZN.

```APIDOC
## PZN7 (aka: PZN)

### Description
Supports the PZN7 barcode symbology.

### Class
`barcode.codex.PZN7`

### Members
(See `autoclass` documentation for details on available members.)
```

--------------------------------

### Generate Image Barcode to File-like Object

Source: https://python-barcode.readthedocs.io/en/stable/_sources/getting-started.rst.txt

Generate an EAN13 barcode and write it to a BytesIO object using ImageWriter.

```python
from io import BytesIO

from barcode import EAN13
from barcode.writer import ImageWriter

# Write to a file-like object:
rv = BytesIO()
EAN13(str(100000902922), writer=ImageWriter()).write(rv)
```

--------------------------------

### Code 39

Source: https://python-barcode.readthedocs.io/en/stable/_sources/supported-formats.rst.txt

Documentation for the Code 39 barcode format.

```APIDOC
## Code 39

### Description
Supports the Code 39 barcode symbology.

### Class
`barcode.codex.Code39`

### Members
(See `autoclass` documentation for details on available members.)
```

--------------------------------

### Generate SVG Barcode to File

Source: https://python-barcode.readthedocs.io/en/stable/_sources/getting-started.rst.txt

Generate an EAN13 barcode and write it to a file named 'somefile.svg' using SVGWriter.

```python
with open("somefile.svg", "wb") as f:
    EAN13(str(100000011111), writer=SVGWriter()).write(f)
```

--------------------------------

### EAN-8

Source: https://python-barcode.readthedocs.io/en/stable/_sources/supported-formats.rst.txt

Documentation for the EAN-8 barcode format.

```APIDOC
## EAN-8

### Description
Supports the EAN-8 barcode symbology.

### Class
`barcode.ean.EuropeanArticleNumber8`

### Members
(See `autoclass` documentation for details on available members.)
```

--------------------------------

### Code39

Source: https://python-barcode.readthedocs.io/en/stable/supported-formats.html

Implementation for Code 39 barcodes. Supports checksum addition and custom writers.

```APIDOC
## Code39

### Description
Implementation for Code 39 barcodes. Supports checksum addition and custom writers.

### Class Signature
`barcode.codex.Code39(code: str, writer=None, add_checksum: bool = True)`

### Parameters
* **code** (str) - Code 39 string without * and without checksum.
* **writer** (barcode.writer) - A `barcode.writer` instance used to render the barcode (default: SVGWriter).
* **add_checksum** (bool) - Add the checksum to code or not.

### Methods
#### `get_fullcode()`
Returns the full code as it will be encoded.

#### `render(writer_options=None, text=None)`
Renders the barcode using self.writer.
* **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.
```

--------------------------------

### UniversalProductCodeA

Source: https://python-barcode.readthedocs.io/en/stable/supported-formats.html

Universal Product Code (UPC) barcode. UPC-A consists of 12 numeric digits. Initializes new UPC-A barcode.

```APIDOC
## UPC-A

### Description
Universal Product Code (UPC) barcode. UPC-A consists of 12 numeric digits. Initializes new UPC-A barcode.

### Parameters
* **upc** (str) - The upc number as string.
* **writer** - barcode.writer instance. The writer to render the barcode (default: SVGWriter).
* **make_ean** (bool) - Indicates if a leading zero should be added to the barcode. This converts the UPC into a valid European Article Number (EAN).

### Methods
#### 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** – Options for self.writer, see writer docs for details.
* **text** – 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
```

--------------------------------

### EAN-13

Source: https://python-barcode.readthedocs.io/en/stable/_sources/supported-formats.rst.txt

Documentation for the EAN-13 barcode format.

```APIDOC
## EAN-13

### Description
Supports the EAN-13 barcode symbology.

### Class
`barcode.ean.EuropeanArticleNumber13`

### Members
(See `autoclass` documentation for details on available members.)
```

--------------------------------

### ISBN-13

Source: https://python-barcode.readthedocs.io/en/stable/_sources/supported-formats.rst.txt

Documentation for the ISBN-13 (International Standard Book Number 13) barcode format.

```APIDOC
## ISBN-13

### Description
Supports the ISBN-13 (International Standard Book Number 13) barcode symbology.

### Class
`barcode.isxn.InternationalStandardBookNumber13`

### Members
(See `autoclass` documentation for details on available members.)
```

--------------------------------

### ISBN-10

Source: https://python-barcode.readthedocs.io/en/stable/_sources/supported-formats.rst.txt

Documentation for the ISBN-10 (International Standard Book Number 10) barcode format.

```APIDOC
## ISBN-10

### Description
Supports the ISBN-10 (International Standard Book Number 10) barcode symbology.

### Class
`barcode.isxn.InternationalStandardBookNumber10`

### Members
(See `autoclass` documentation for details on available members.)
```

--------------------------------

### Code 128

Source: https://python-barcode.readthedocs.io/en/stable/_sources/supported-formats.rst.txt

Documentation for the Code 128 barcode format, available since version 0.8beta1.

```APIDOC
## Code 128

### Description
Supports the Code 128 barcode symbology.

### Version Added
0.8beta1

### Class
`barcode.codex.Code128`

### Members
(See `autoclass` documentation for details on available members.)
```

--------------------------------

### JAN

Source: https://python-barcode.readthedocs.io/en/stable/_sources/supported-formats.rst.txt

Documentation for the JAN (Japan Article Number) barcode format.

```APIDOC
## JAN

### Description
Supports the JAN (Japan Article Number) barcode symbology.

### Class
`barcode.ean.JapanArticleNumber`

### Members
(See `autoclass` documentation for details on available members.)
```

--------------------------------

### PZN7

Source: https://python-barcode.readthedocs.io/en/stable/supported-formats.html

Implementation for PZN7 (German pharmaceutical product number) barcodes.

```APIDOC
## PZN7 (aka: PZN)

### Description
Implementation for PZN7 (German pharmaceutical product number) barcodes.

### Class Signature
`barcode.codex.PZN7(pzn, writer=None)`

### Parameters
* **pzn** (str) - Code to render.
* **writer** (barcode.writer) - The writer to render the barcode (default: SVGWriter).

### Methods
#### `get_fullcode()`
Returns the full code as it will be encoded.
```

--------------------------------

### GS1-128

Source: https://python-barcode.readthedocs.io/en/stable/_sources/supported-formats.rst.txt

Documentation for the GS1-128 barcode format, available since version v0.10.0.

```APIDOC
## GS1-128

### Description
Supports the GS1-128 barcode symbology.

### Version Added
v0.10.0

### Class
`barcode.codex.Gs1_128`

### Members
(See `autoclass` documentation for details on available members.)
```

--------------------------------

### Generate SVG Barcode to File-like Object

Source: https://python-barcode.readthedocs.io/en/stable/_sources/getting-started.rst.txt

Generate an EAN13 barcode and write it to a BytesIO object using SVGWriter.

```python
from io import BytesIO

from barcode import EAN13
from barcode.writer import SVGWriter

# Write to a file-like object:
rv = BytesIO()
EAN13("100000902922", writer=SVGWriter()).write(rv)
```

--------------------------------

### Generate Image Barcodes

Source: https://python-barcode.readthedocs.io/en/stable/getting-started.html

Generate EAN13 barcodes and write them to image files (e.g., JPEG) or file-like objects using ImageWriter. Recommended for non-SVG compatible targets.

```python
from io import BytesIO

from barcode import EAN13
from barcode.writer import ImageWriter

# Write to a file-like object:
rv = BytesIO()
EAN13(str(100000902922), writer=ImageWriter()).write(rv)

# Or to an actual file:
with open("somefile.jpeg", "wb") as f:
    EAN13("100000011111", writer=ImageWriter()).write(f)
```

--------------------------------

### InternationalStandardBookNumber10

Source: https://python-barcode.readthedocs.io/en/stable/supported-formats.html

Initializes a new ISBN-10 barcode. This code is rendered as EAN-13 by prefixing it with 978.

```APIDOC
## ISBN-10

### Description
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).
```

--------------------------------

### Code128

Source: https://python-barcode.readthedocs.io/en/stable/supported-formats.html

Implementation for Code 128 barcodes. Checksum is added automatically.

```APIDOC
## Code128

### Description
Implementation for Code 128 barcodes. Checksum is added automatically.

### Class Signature
`barcode.codex.Code128(code, writer=None)`

### Parameters
* **code** (str) - Code 128 string without checksum (added automatically).
* **writer** (barcode.writer) - The writer to render the barcode (default: SVGWriter).

### Methods
#### `get_fullcode()`
Returns the full code, encoded in the barcode.

#### `render(writer_options=None, text=None)`
Renders the barcode using self.writer.
* **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.
```

--------------------------------

### EAN14

Source: https://python-barcode.readthedocs.io/en/stable/_sources/supported-formats.rst.txt

Documentation for the EAN14 (European Article Number 14) barcode format.

```APIDOC
## EAN14

### Description
Supports the EAN14 (European Article Number 14) barcode symbology.

### Class
`barcode.ean.EuropeanArticleNumber14`

### Members
(See `autoclass` documentation for details on available members.)
```

--------------------------------

### Generate SVG Barcodes

Source: https://python-barcode.readthedocs.io/en/stable/getting-started.html

Generate EAN13 barcodes and write them to SVG files or file-like objects. Checksums are calculated automatically.

```python
from io import BytesIO

from barcode import EAN13
from barcode.writer import SVGWriter

# Write to a file-like object:
rv = BytesIO()
EAN13("100000902922", writer=SVGWriter()).write(rv)

# Or to an actual file:
with open("somefile.svg", "wb") as f:
    EAN13(str(100000011111), writer=SVGWriter()).write(f)
```

--------------------------------

### ISSN

Source: https://python-barcode.readthedocs.io/en/stable/_sources/supported-formats.rst.txt

Documentation for the ISSN (International Standard Serial Number) barcode format.

```APIDOC
## ISSN

### Description
Supports the ISSN (International Standard Serial Number) barcode symbology.

### Class
`barcode.isxn.InternationalStandardSerialNumber`

### Members
(See `autoclass` documentation for details on available members.)
```

--------------------------------

### InternationalStandardSerialNumber

Source: https://python-barcode.readthedocs.io/en/stable/supported-formats.html

Initializes a new ISSN barcode. This code is rendered as EAN-13 by prefixing it with 977 and adding 00 between code and checksum.

```APIDOC
## ISSN

### Description
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).
```

--------------------------------

### Gs1_128

Source: https://python-barcode.readthedocs.io/en/stable/supported-formats.html

GS1-128 barcode. Following the norm, a gs1-128 barcode is a subset of code 128 barcode, it can be generated by prepending the code with the FNC1 character.

```APIDOC
## GS1-128

### Description
Following the norm, a gs1-128 barcode is a subset of code 128 barcode, it can be generated by prepending the code with the FNC1 character.

### Parameters
* **code** (String) - The gs1-128 code.
* **writer** (barcode.writer Instance) - The writer to render the barcode (default: SVGWriter).

### Methods
#### get_fullcode()
Returns the full code, encoded in the barcode.
Returns: Full human readable code.
Return type: String
```

--------------------------------

### EuropeanArticleNumber14

Source: https://python-barcode.readthedocs.io/en/stable/supported-formats.html

Represents an EAN-14 barcode. See EAN13’s __init__ for details.

```APIDOC
## EAN14

### Description
Represents an EAN-14 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).
* **no_checksum** (bool) - If true, the checksum is not calculated.
* **guardbar** (bool) - If true, a guard bar is added to the barcode.

### Methods
#### calculate_checksum()
Calculates the checksum for EAN13-Code.
Returns: The checksum for self.ean.
Return type: Integer
```

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