Python3 图片水平镜像实现

 # -*- coding: utf-8 -*-
 """
 Created on Sun Feb  4 12:15:38 2018

 @author: markli
 """
 from PIL import Image;
 import os;

 class Mirror:
     def __init__(self):
         #self.path = path;
         self.formats = ['.png','.jpg','.jpeg','.bmp','.gif'];

     def ImageMirror(self,fp,savepath):
         filepath = fp;
         f_format = '';
         if(os.path.exists(filepath) == False):
             print("路径不存在");
             return;
         f_format = os.path.splitext(filepath)[1].lower();
         if(f_format not in self.formats):
             print("图片格式不正确");
             return;

         img = Image.open(filepath);
         img_pixel = img.load();
         mirror = Image.new(img.mode,img.size,"white");

         width, height = img.size;
         """水平镜像转换，遍历每个像素点，将后列变前列"""
         for y in range(height):
             for x in range(width):
                 pixel = img_pixel[width-1-x,y];
                 mirror.putpixel((x,y),pixel);

         sp,f = os.path.splitext(savepath);
         if(f != f_format):
             savepath = sp + f_format;
         mirror.save(savepath);

     def TranslateAll(self,filedir,savedir):
         """
         将目标图片集全部进行镜像处理
         filedir 目标图片集所在的文件夹路径
         savedir 镜像图片保存的文件夹路径
         """
         filelist = self.Getfile(filedir);
         if(os.path.exists(savedir) == True):
             print("保存路径已存在，请重新设定路径");
             return;
         os.mkdir(savedir);
         for f in filelist:
             fn,ext = os.path.splitext(os.path.split(f)[1]);
             fn = fn + "mirror"; #给定镜像图片的名称
             filename = fn + ext; #镜像图片与原图具有相同的扩展名
             savefile = os.path.join(savedir,filename); #构造出完整的保存路径
             self.ImageMirror(f,savefile);

     def Getfile(self,filedir):
         """获得文件夹filedir目录下所有的文件路径"""
         filepath = [];
         if(os.path.exists(filedir) == False):
             print("路径不存在");
             return filepath;
         if(os.path.isdir(filedir) == False):
             print("该路径不是文件夹");
             return filepath;
         filelist = os.listdir(filedir);

         for f in filelist:
             f = os.path.join(filedir,f);
             if(os.path.isfile(f) == True):
                 filepath.append(f);
             elif(os.path.isdir(f) == True):
                 filepath.extend(self.Getfile(f));
             else:
                 continue;
         return filepath;

 #fp = "C:\\Users\\yangp\\Desktop\\python_b_blue.jpg";
 #m = Mirror();
 #savep = "C:\\Users\\yangp\\Desktop\\python_b_blue_m.jpg";
 #m.ImageMirror(fp,savep);

 filedir = "C:\\Users\\yangp\\Desktop\\mirror";
 savedir = "C:\\Users\\yangp\\Desktop\\mirror2";
 m = Mirror();
 m.TranslateAll(filedir,savedir);