from PIL import Image,ImageDraw,ImageFont
def addNum(filePath):
img = Image.open(filePath)
size = img.size
fontSize = size[1] / 4
draw = ImageDraw.Draw(img)
ttFont = ImageFont.truetype("/Library/Fonts/arial.ttf", fontSize)
draw.text((size[0]-fontSize, 0), "3",(256,0,0), font=ttFont)
del draw
img.save('./result.jpg')
img.show()
print addNum("image.jpg")
