How to Generate a Barcode Using Python

Introduction

A barcode is a machine-readable code in the form of numbers and a pattern of parallel lines of varying widths, printed on a commodity and is used especially for product management. In this tutorial, we will be looking at how to generate a barcode using Python.

Install module

In this program, we will be using the python-barcode module. To install this module open your terminal and run the command below.

pip3 install python-barcode

Create barcode

Now open a file called app.py and import the modules below.

from io import BytesIO
from barcode import EAN13
from barcode.writer import SVGWriter

Next, let’s create a class to generate and save our barcode.

class BarcodeGenerator:
    def __init__(self, number):
        self.number = number
    
    def generate(self):
        ph = BytesIO()
        EAN13(str(self.number), writer=SVGWriter()).write(ph)
        return ph.getvalue()

    def save(self, filename):
        with open(filename, 'wb') as f:
            f.write(self.generate())

if __name__ == '__main__':
    barcode = BarcodeGenerator("100000942922")
    barcode.save('barcode.svg')