Generate Barcodes and QR Codes Instantly with Python and Spire.Barcode

Barcodes and QR codes are essential tools for data exchange and storage. This article shows how to quickly generate common barcodes such as Code 128, EAN‑13, and QR codes using Python.

Python Barcode Library

The tutorial uses the Spire.Barcode for Python library, which supports many 1‑D and 2‑D barcode formats and allows customization of border style, color, and margins. Install it via:

pip install Spire.Barcode

Key Classes and Methods

BarcodeSettings – class for configuring barcode generation options such as type, data, background color, size, margins, resolution, etc.

BarcodeSettings.Type – property to set the barcode type.

BarcodeSettings.Data – property to set data for 1‑D barcodes.

BarcodeSettings.Data2D – property to set text for 2‑D codes.

BarcodeGenerator – class used for rendering the barcode.

BarcodeGenerator.GenerateImage() – method that generates the barcode image.

Generate a Code 128 Barcode

from spire.barcode import *

def WriteAllBytes(fname: str, data):
    with open(fname, "wb") as fp:
        fp.write(data)
        fp.close()

# Create settings
barcodeSettings = BarcodeSettings()
barcodeSettings.Type = BarCodeType.Code128
barcodeSettings.Data = "XD00555"
barcodeSettings.Code128SetMode = Code128SetMode.Auto

# Generate image
barCodeGenerator = BarCodeGenerator(barcodeSettings)
barcodeimage = barCodeGenerator.GenerateImage()
WriteAllBytes("Code128.png", barcodeimage)

Generate an EAN‑13 Barcode

from spire.barcode import *

def WriteAllBytes(fname: str, data):
    with open(fname, "wb") as fp:
        fp.write(data)
        fp.close()

# Create settings
barcodeSettings = BarcodeSettings()
barcodeSettings.Type = BarCodeType.EAN13
barcodeSettings.Data = "5019632805254"

# Generate image
barCodeGenerator = BarCodeGenerator(barcodeSettings)
barcodeimage = barCodeGenerator.GenerateImage()
WriteAllBytes("EAN13.png", barcodeimage)

Generate a QR Code

from spire.barcode import *

def WriteAllBytes(fname: str, data):
    with open(fname, "wb") as fp:
        fp.write(data)
        fp.close()

# Create settings
barcodeSettings = BarcodeSettings()
barcodeSettings.Type = BarCodeType.QRCode
barcodeSettings.BackColor = Color.get_WhiteSmoke()
barcodeSettings.QRCodeDataMode = QRCodeDataMode.Byte
barcodeSettings.QRCodeECL = QRCodeECL.M
barcodeSettings.ShowTextOnBottom = True
barcodeSettings.DpiX = 500
barcodeSettings.DpiY = 500
barcodeSettings.Data2D = "Hello, World"

# Generate image
barCodeGenerator = BarCodeGenerator(barcodeSettings)
barcodeimage = barCodeGenerator.GenerateImage()
WriteAllBytes("QRCode.png", barcodeimage)

During testing, readers can discuss any issues in the comments, and a one‑month trial license can be applied to remove watermarks from generated barcodes.