barcode.py

from SimpleCV import Color, Camera, Display

cam = Camera()
display = Display()

message = 'Last item scanned: '
result = 'None'

while (display.isNotDone()):
    img = cam.getImage()

    barcode = img.findBarcode()
    if (barcode is not None):
        result = str(barcode.data)

    img.drawText(message + result, color = Color.GREEN, fontsize = 40)

    img.save(display)

requirement.txt

numpy
scipy
nose
opencv
simplecv
pygame