How to process an image with anotation file (.txt) to create bounding boxes in images using python.

<pre>import cv2
with open("annotationfile\\orange.txt") as iostream:
content = iostream.read()
color = (0, 0, 255) # RED
for line in content.split("\\n"):
image_path = "images\\orange.jpg"
label, xmin, ymin, xmax, ymax = line.split(",")
image = cv2.imread(image_path)
pt1 = (int(xmin), int(ymin))
pt2 = (int(xmax), int(ymax))
cv2.rectangle(image, pt1, pt2, color)
cv2.imshow("Visualization bounding box", image)
cv2.waitKey()
outfile = image_path\[:-4\] + "\_bbox.jpg"
outimage = image\[int(ymin):int(ymax), int(xmin):int(xmax)\]
cv2.imwrite(outfile, outimage)