# -*- coding:utf-8 -*-

import os
def rename():
    path = raw_input("請輸入要處理的文件夾路徑")
    print path
    old_ext = "."+raw_input("請輸入要處理的文件類型")
    print old_ext
    new_ext = "."+raw_input("請輸入你想變成的文件類型")
    print new_ext
    for (path, dirs, files) in os.walk(path):#遍歷目錄樹
        for filename in files:
            ext = os.path.splitext(filename)[1] #取得文件類型，注意它還帶著點號
            print ext;
            if(ext == old_ext):
                print "----------------"
                newname = filename.replace(old_ext, new_ext)
                oldpath = path + "http://" + filename
                newpath = path + "http://" + newname
                try:
                    os.rename(oldpath, newpath)
                except BaseException, e:
                   print(str(e))

if __name__ == '__main__':
    rename()