python批量图片处理简单示例

#!/usr/bin/python#coding:utf-8import osfrom PIL import Image#源目录MyPath = 'C:/Users/Eric/Desktop/python_text/20161214/test_Image/'#输出目录OutPath = 'C:/Users/Eric/Desktop/python_text/20161214/outpath/'def processImage(filesoure, destsoure, name, imgtype):  '''  filesoure是存放待转换图片的目录  destsoure是存在输出转换后图片的目录  name是文件名  imgtype是文件类型  '''  imgtype = 'jpeg' if imgtype == '.jpg' else 'png'  #打开图片  im = Image.open(filesoure + name)  #缩放比例  rate =max(im.size[0]/640.0 if im.size[0] > 60 else 0, im.size[1]/1136.0 if im.size[1] > 1136 else 0)  if rate:    im.thumbnail((im.size[0]/rate, im.size[1]/rate))  im.save(destsoure + name, imgtype)def run():  #切换到源目录，遍历源目录下所有图片  os.chdir(MyPath)  for i in os.listdir(os.getcwd()):    #检查后缀    postfix = os.path.splitext(i)[1]    if postfix == '.jpg' or postfix == '.png':      processImage(MyPath, OutPath, i, postfix)if __name__ == '__main__':  run()