将png图片中的指定颜色设置为透明

transparent.py

# 将图片中的指定颜色设置为透明
# 运行于python3.7 Pillow5.3

import sys
from PIL import Image

def Convert(fileName):
    image = Image.open(fileName)
    img = image.convert("RGBA")
    
    for r in range(img.height):
        for c in range(img.width):
            p = img.getpixel((r, c))
            # 将白色透明化
            if p[0] == 255 and p[1] == 255 and p[2] == 255:
                p = (p[0], p[1], p[2], 0)
                img.putpixel((r, c), p)
    
    img.save(fileName)
    
if __name__ == '__main__':
    if len(sys.argv) >= 2:
        Convert(sys.argv[1])