怎么样利用Python为iOS10生成图标和截屏？

#encoding=utf-8
#by 不灭的小灯灯
#create date 2016/5/22
#update 2016/9/21
#support iOS 10
#site www.winterfeel.com
import os
import sys
from PIL import Image
 
iosSizes = ['20@1x','20@2x','20@3x','29@1x','29@2x','29@3x','40@1x','40@2x','40@3x','60@2x','60@3x','60@3x','76@1x','76@2x','167@1x']
androidSizes = [32,48,72,96,144,192]
androidNames = ['ldpi','mdpi','hdpi','xhdpi','xxhdpi','xxxhdpi']
 
sizesiOS = [(640,960),(640, 1136),(750, 1334),(1242, 2208),(1536, 2048),(2048, 2732)]
foldersiOS = ['iPhone4s','iPhone5','iPhone6','iPhone6plus','iPad','iPadLarge']
 
sizesAndroid = [(480,800),(720,1280),(1080,1920)]
foldersAndroid = ['480x800','720x1280','1080x1920']
 
def processIcon(filename,platform):
 icon = Image.open(filename).convert("RGBA")
 if icon.size[0] != icon.size[1]:
  print 'Icon file must be a rectangle!'
  return
 if platform == 'android':
  #安卓圆角
  mask = Image.open('mask.png')
  r,g,b,a = mask.split()
  icon.putalpha(a)
  if not os.path.isdir('androidIcon'):
   os.mkdir('androidIcon')
  index = 0
  for size in androidSizes:
   im = icon.resize((size,size),Image.BILINEAR)
   im.save('androidIcon/icon-'+ androidNames[index]+'.png')
   index = index + 1
 else:
  if not os.path.isdir('iosIcon'):
   os.mkdir('iosIcon')
  for size in iosSizes:
   originalSize = int(size.split('@')[0])#原始尺寸
   multiply = int(size.split('@')[1][0:1])#倍数
   im = icon.resize((originalSize*multiply,originalSize*multiply),Image.BILINEAR)
   im.save('iosIcon/icon'+size+'.png')
 print 'Congratulations!It\'s all done!'
 
def walk_dir(dir,platform):
 files = os.listdir(dir)
 for name in files:
  if name.split('.')[-1] == 'jpg' or name.split('.')[-1] == 'png':#处理jpg和png
   produceImage(name,platform)
 print 'Congratulations!It\'s all done!'
 
def produceImage(filename,platform):
 print 'Processing:' + filename
 img = Image.open(filename)
 index = 0
 sizes = sizesiOS
 folders = foldersiOS
 if platform == 'android':#默认ios，如果是安卓
  sizes = sizesAndroid
  folders = foldersAndroid
 for size in sizes:
  if not os.path.isdir(folders[index]):
   os.mkdir(folders[index])
  if img.size[0] > img.size[1]:#如果是横屏，交换坐标
   im = img.resize((size[1],size[0]),Image.BILINEAR)
   im.save(folders[index]+'/'+filename)
  else:
   im = img.resize(size,Image.BILINEAR)
   im.save(folders[index]+'/'+filename)
  index = index + 1
 
action = sys.argv[1]#action:icon or screenshot
if action == 'screenshot': 
 platform = sys.argv[2]#platform
 if platform == 'ios':
  walk_dir('./','ios')
 elif platform == 'android':
  walk_dir('./','android')
 else:
  print 'Hey,Platform can only be "ios" or "android" !'
elif action == 'icon':
 filename = sys.argv[2]#image filename
 platform = sys.argv[3]#platform
 if not os.path.exists(filename):
  print 'Hey,File Not Found!'
 else:
  if platform == 'ios':
   processIcon(filename,'ios')
  elif platform == 'android':
   processIcon(filename,'android')
  else:
   print 'Hey,Platform can only be "ios" or "android" !'
else:
 print 'Hey,action can only be "icon" or "screenshot" !'