python自动化生成IOS的图标

#coding=utf-8
import os ,threading
from PIL import Image
import subprocess
import json
class ImgManager( ):
  thread_lock = threading.Lock()
  @classmethod
  def sharedinstance(cls):
    with ImgManager.thread_lock:
      if not hasattr(ImgManager,\"instance\"):
        ImgManager.instance = ImgManager()
    return ImgManager.instance

  # 运行shell命令
  def runshellCMD(self,cmd,dsr):
    progress = subprocess.Popen(cmd,shell=True)
    progress.wait()
    result = progress.returncode
    if result !=0:
      print(\"%s失败\"%(dsr))
    else:
      print(\"%s成功\"%(dsr))

  #创建图片
  def createImg(self,model):
    path = \'%s/AppStore.png\'%(os.getcwd())
    currentPath = \"%s/Images/%s\"%(os.getcwd(),model.filename)
    print(currentPath)
    im = Image.open(path,\'r\')
    # w,h=im.size
    # print(\"%s,%s\"%(str(w),str(h)))
    #
    im.thumbnail((float(model.get_wh()),float(model.get_wh())))
    if model.filename.endswith(\'.png\'):
      im.save(\"%s\" % (currentPath),\"png\")
    else:
      # self.runshellCMD(\"sudo cp %s %s\" % (path, currentPath), \"拷贝\")
      self.addTransparency(im)
      im.save(\"%s\" % (currentPath), \"jpeg\")
      # r, g, b, alpha = im.split()
      # print(\"%s\"%(str(im.split()[0])))

#修改透明度
  def addTransparency(img, factor=0.0):
    img = img.convert(\'RGBA\')
    img_blender = Image.new(\'RGBA\', img.size, (0, 0, 256, 256))
    img = Image.blend(img_blender, img, factor)
    return img


#解析Contents.json，这个文件每一个Images.xcassets 的AppIcon文件夹都有，直接复用就可以了
  def handle_icon_images(self):

    jsonpath = os.getcwd() +\"/Contents.json\"
    if not os.path.exists(jsonpath):
      print(\"Contents.json path not exite\")
      return
    with open(jsonpath,\'r\') as f:
      jsonstr = f.read()
    modle = json.loads(jsonstr)
    arrs = modle[\'images\']
    # print(arrs)
    icon_models=[]
    for obj in arrs:
      size=obj[\"size\"]
      idiom=obj[\"idiom\"]
      filename=obj[\"filename\"]
      scale=obj[\"scale\"]
      icom =iconImg(size=size,idiom=idiom,filename=filename,scale=scale)
      # icon_models.append(icom)
      self.createImg(icom)


  \"\"\"

  \"size\" : \"29x29\",
   \"idiom\" : \"iphone\",
   \"filename\" : \"Icon-Small@3x.png\",
   \"scale\" : \"3x\"
  \"\"\"
  #json 数据里面有效数据的类
class iconImg( ):
  def __init__(self,size,idiom,filename,scale):
    self.size = size
    self.idiom = idiom
    self.filename = filename
    self.scale = scale

  def show(self):
    print(\"%s,%s,%s,%s\"%(self.size,self.idiom,self.filename,self.scale))


  def get_wh(self):
    return (float(self.size.split(\'x\')[0]))*(float(self.scale.split(\'x\')[0]))



if __name__ == \'__main__\':
  ImgManager.sharedinstance().handle_icon_images()