philippeowagner / swiss-qr-bill

A Python library to generate Swiss QR-bill payment slips

Python library to generate Swiss QR-bills

From 2020, Swiss payment slips will progressively be converted to the QR-bill format. Specifications can be found on https://www.paymentstandards.ch/

This library is aimed to produce properly-formatted QR-bills as SVG files either from command line input or by using the QRBill class.

Installation

You can easily install this library with:

$ pip install qrbill

Command line usage example

Minimal:

$ qrbill --account "CH5800791123000889012" --creditor-name "John Doe"
  --creditor-postalcode 2501 --creditor-city "Biel"

More complete:

$ qrbill --account "CH44 3199 9123 0008 8901 2" --reference-number "210000000003139471430009017"
--creditor-name "Robert Schneider AG" --creditor-street "Rue du Lac 1268"
--creditor-postalcode "2501" --creditor-city "Biel"
--additional-information "Bill No. 3139 for garden work and disposal of cuttings."
--debtor-name "Pia Rutschmann" --debtor-street "Marktgasse 28" --debtor-postalcode "9400"
--debtor-city "Rorschach" --due-date "2019-10-31" --language "de"

For usage:

$ qrbill -h

If no --output SVG file path is specified, the SVG file will be named after the account and the current date/time and written in the current directory.

Note that if you don't like the automatic line wrapping in the human-readable part of some address, you can replace a space by a newline sequence in the creditor or debtor name, line1, line2, or street to force a line break in the printed addresses. (e.g. --creditor-street "Rue des Quatorze Contours du Cheminndu Creux du Van") The data encoded in the QR bill will not have the newline character. It will be replaced by a regular space.

Python usage example

>>> from qrbill import QRBill
>>> my_bill = QRBill(
        account='CH5800791123000889012',
        creditor={
            'name': 'Jane', 'pcode': '1000', 'city': 'Lausanne', 'country': 'CH',
        },
        amount='22.45',
    )
>>> bill.as_svg('/tmp/my_bill.svg')

Outputting as PDF or bitmap

If you want to produce a PDF version of the resulting bill, we suggest using the svglib <https://pypi.org/project/svglib/> library. It can be used on the command line with the svg2pdf script, or directly from Python:

>>> import tempfile
>>> from qrbill import QRBill
>>> from svglib.svglib import svg2rlg
>>> from reportlab.graphics import renderPDF

>>> my_bill = QRBill(
        account='CH5800791123000889012',
        creditor={
            'name': 'Jane', 'pcode': '1000', 'city': 'Lausanne', 'country': 'CH',
        },
        amount='22.45',
    )
>>> with tempfile.TemporaryFile(encoding='utf-8', mode='r+') as temp:
>>>     my_bill.as_svg(temp)
>>>     temp.seek(0)
>>>     drawing = svg2rlg(temp)
>>> renderPDF.drawToFile(drawing, "file.pdf")

or to produce a bitmap image output:

>>> from reportlab.graphics import renderPM
>>> dpi = 300
>>> drawing.scale(dpi/72, dpi/72)
>>> renderPM.drawToFile(drawing, "file.png", fmt='PNG', dpi=dpi)

Running tests

You can run tests either by executing:

$ python tests/test_qrbill.py

or:

$ python setup.py test

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