__author__ = \'zhangcx\' import os import shutil path = r\'C:\Users\zhangcx\Desktop\' lst = sorted(os.listdir(path)) for i in lst: a,b = os.path.splitext(i) b = b[1:] print(\'{f}:{ext}\'.format(f=a,ext=b)) if b: olddir = \'%s\%s\'% (path, i) newdir = \'%s\%s\' % (path,b.lower()) if not os.listdir(path).__contains__(b.lower()): os.mkdir(newdir) shutil.move(olddir,newdir) #print(olddir) #print(newdir)