text: from pyzbar import pyzbar
  import cv2
  
  
  def decode(image):
      # decodes all barcodes from an image
      decoded_objects = pyzbar.decode(image)
      for obj in decoded_objects:
          # draw the barcode
          print("detected barcode:", obj)
          image = draw_barcode(obj, image)
          # print barcode type & data
          print("Type:", obj.type)
          print("Data:", obj.data)
          print()
  
      return image
  
  
  def draw_barcode(decoded, image):
      # n_points = len(decoded.polygon)
      # for i in range(n_points):
      #     image = cv2.line(image, decoded.polygon[i], decoded.polygon[(i+1) % n_points], color=(0, 255, 0), thickness=5)
      # uncomment above and comment below if you want to draw a polygon and not a rectangle
      image = cv2.rectangle(image, (decoded.rect.left, decoded.rect.top), 
                              (decoded.rect.left + decoded.rect.width, decoded.rect.top + decoded.rect.height),
                              color=(0, 255, 0),
                              thickness=5)
      return image
  
  
  if __name__ == "__main__":
      from glob import glob
  
      barcodes = glob("barcode*.png")
      for barcode_file in barcodes:
          # load the image to opencv
          img = cv2.imread(barcode_file)
          # decode detected barcodes & get the image
          # that is drawn
          img = decode(img)
          # show the image
          cv2.imshow("img", img)
          # cv2.imwrite("barcode_detected.png", img)
          cv2.waitKey(0)