Generating Numbered Images with Python Pillow (PIL)

Continuing from the previous article, this tutorial shows how to add sequential numbers to a single base image, generate new images for each number, and save them using Python's Pillow library.

Below is the complete Python script. It creates a list of numbers 1‑20, loads the original image, draws each number in red with a specified font, and saves each result as a separate JPEG file.

# -*- coding:utf-8 -*-
from PIL import Image, ImageDraw, ImageFont

'''
生成测试图片
'''
def set_tupian():
    numbers = []
    for x in range(1, 21):
        numbers.append(str(x))
    # 设置字体样式
    font_type = '/System/Library/Fonts/STHeiti Light.ttc'
    font = ImageFont.truetype(font_type, 100)
    # 打开图片
    for i in numbers:
        imageFile = "../原始图片.JPG"
        im1 = Image.open(imageFile)
        draw = ImageDraw.Draw(im1)
        #设置文字位置/内容/颜色/字体
        draw.text((160, 0), i, (255, 0, 0), font=font)
        # 另存图片
        im1.save("../" + i + ".jpg")
set_tupian()

The script demonstrates a simple image‑processing workflow that can be adapted for batch labeling, watermarking, or creating numbered datasets.