首先安裝所使用的庫 pillow，
pillow 是用來取代 PIL 的，

pip3 install pillow

安裝成功圖：

A866FFD7-2283-4BFB-8313-DBDEE909A579.png

簡單的代碼：

from __future__ import print_function
import os, sys
from PIL import Image

imgNames = [((57,57),"icon.png"),
            ((114,114),"icon@2x.png"),
            ((171,171),"icon@3x.png"),
            ((20,20),"icon-20.png"),
            ((40,40),"icon-20@2x.png"),
            ((60,60),"icon-20@3x.png"),
            ((29,29),"icon-29.png"),
            ((58,58),"icon-29@2x.png"),
            ((87,87),"icon-29@3x.png"),
            ((40,40),"icon-40.png"),
            ((80,80),"icon-40@2x.png"),
            ((120,120),"icon-40@3x.png"),
            ((50,50),"icon-50.png"),
            ((60,60),"icon-60.png"),
            ((120,120),"icon-60@2x.png"),
            ((180,180),"icon-60@3x.png"),
            ((76,76),"icon-76.png"),
            ((152,152),"icon-76@2x.png"),
            ((228,228),"icon-76@3x.png"),
            ((83.5,83.5),"icon-83_5.png"),
            ((167,167),"icon-83_5@2x.png"),
            ((250.5,250.5),"icon-83_5@3x.png")]

i = 0
for i in range(len(imgNames)):
    imt = Image.open("image.png")
    size = imgNames[i][0] 
    #print size
    name = imgNames[i][1]
    #print name+type(name)
    imt.thumbnail(size)
    imt.save(name)
    i = i+1

該腳本和圖片（image.png）處于同一目錄下，運行即可。

PS:
當(dāng)圖片的大小比要生成的圖片大小要小的話，只會按圖片的大小生成出來。

木子才~