Generate barcode

generate_barcode.py

from StringIO import StringIO
from PIL import Image
import cv2
import barcode
from barcode.writer import ImageWriter
import numpy as np

# print barcode.PROVIDED_BARCODES

code = barcode.get('code128', 'RN012345678LT', writer=ImageWriter())

options = {}
options['module_width'] = 1
options['module_height'] = 40.0
options['center_text'] = True
options['font_size'] = 70
options['text_distance'] = 3

fp = StringIO()
code.write(fp, options)

fp.seek(0)
img_array = np.asarray(bytearray(fp.read()), dtype=np.uint8)
img = cv2.imdecode(img_array, 0)

cv2.imshow("im", img)
cv2.imwrite("code.png", img)
cv2.waitKey(0)