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Released:
PDF417 2D barcode generator for Python
Project description
Easily encode your data into a 2D barcode using the PDF417 format.
Florida Driver License and Identi cation Card 2D Barcode (PDF417) from Card Back. Sample Class E Florida Driver License Example PDF 417 decodes as: This example displays a typical Class E driver license, with sample data populated. Refer to the following page for full detail of the 2D barcode possible contents. Free PDF417 Generator: This free online barcode generator creates all 1D and 2D barcodes. Reading the Driver License barcode data provides properly spelled driver identification data in a reliable and consistent manner. The barcode may be saved or copied with a right click when generated in a new window. The pdf417gen command can be used to generate a barcode from commandline. It takes the input either as an argument or from stdin. # Show help pdf417gen encode -help # Encode given text and display the barcode pdf417gen encode 'Beautiful is better than ugly' # Encode given text and save barcode to a file (extension determines format) pdf417gen encode -o barcode.png 'Explicit is better.
Licensed under the MIT License, see LICENSE.
CLI
The pdf417gen command can be used to generate a barcode from commandline. Ittakes the input either as an argument or from stdin.
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Usage
Creating bar codes is done in two steps:
- Encode a string to a list of code words using encode()
- Render the barcode using one of the rendering functions: render_image(),render_svg().
Usage overview:
Supports strings (unicode in py2) and byte arrays (str in py2):
Encoding data
The first step is to encode your data to a list of code words. Star printer drivers windows 10.
Columns
The bar code size can be customized by defining the number of columns used torender the data, between 1 and 30, the default value is 6. A bar code can have amaximum of 90 rows, so for larger data sets you may need to increase the numberof columns to decrease the rows count.
Security level
Increasing the security level will produce stronger (and more numerous) errorcorrection codes, making the bar code larger, but less prone to corruption. Thesecurity level can range from 0 to 8, and procuces 2^(level+1) errorcorrection code words, meaning level 0 produces 2 code words and level 8produces 512. The default security level is 2.
Auto Numeric Compaction Mode
This mode can pack almost 3 digits (2.93) info a symbol character.The words with length less 13 symbols will be invoked as Text
Render image
The render_image function takes the following options: Does bleed in league deal more dmg free.
- scale - module width, in pixels (default: 3)
- ratio - module height to width ratio (default: 3)
- padding - image padding, in pixels (default: 20)
- fg_color - foreground color (default: #000000)
- bg_color - background color (default: #FFFFFF)
Note
A module is the smallest element of a barcode, analogous to a pixel. Modulesin a PDF417 bar code are tall and narrow.
The function returns a Pillow Image object containing the barcode.
Colors can be specified as hex codes or using HTML color names.
Render SVG
The render_svg function takes the following options:
- scale - module width, in pixels (default: 3)
- ratio - module height to width ratio (default: 3)
- padding - image padding, in pixels (default: 20)
- color - foreground color (default: #000000)
The function returns a ElementTree object containing the barcode in SVG format.
Unlike render_image, this function does not take a background color option.The background is left transparent.
See also
- pdf417-php - a PHP implementation
- golang-pdf417 - a Go implementation
- Specifications - USS-PDF-417
Release historyRelease notifications | RSS feed
0.8.1
0.8.0
0.7.2
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0.7.1 Imac g4home.
0.7.0
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| Filename, size pdf417-0.8.1.tar.gz (24.0 kB) | File type Source | Python version None | Upload date | Hashes |
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Hashes for pdf417-0.8.1.tar.gz
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Databar PDF417 is a 2d barcode used in different applications including primarily transport, identification cards, and inventory management. PDF stands for Portable Data File and was developed by Symbol Technologies. PDF417 uses built-in error correction to ensure better readability.
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The PDF417 symbology is mainly used in Europe and in the United States. Databar PDF-417 is useful for encoding large amounts of data, usually up to one or two-hundred characters are encoded in a single symbol.The 2D barcode symbology is mostly used in the areas of logistic applications (especially in the automotive industry), transport systems, identification (like driver licenses, passports) and document management.
PDF417 is a 2D barcode symbology (two-dimensional barcode) with very high data density. A single PDF417 symbol can be imagined as multiple linear bar-codes (called 'rows') stacked above each other. This is the reason why the PDF417 symbology is sometimes called a 'stacked linear symbology'. The overall shape of a PDF417 is rectangular. The size of the symbol can be modified by the user. The ratio of the widths of the bars (or spaces) to each other encode the information in a PDF417 symbol. For that reason the printing accuracy and a suitable printer resolution are important for high quality PDF417 symbols. PDF417 is also known under the names PDF-417, Portable Data File and PDF 417. Macro PDF (or Macro PDF417) is used when concatenating multiple PDF417 barcode symbols. PDF417 symbols can link to other symbols which are scanned in sequence allowing even more data to be stored.
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When the PDF417 symbol is created, from 2 to 512 error detection and correction codewords are added. PDF417 uses Reed–Solomon error correction. When the symbol is scanned, the maximum number of corrections that can be made is equal to the number of codewords added, but the standard recommends that two codewords be held back to ensure reliability of the corrected information.