刚开始学习Python，利用PIL完成一个批量图像格式转化的应用。

'''Created on 2013\08\10@author: xwolfs'''import osfrom PIL import Imagedef get_imlist(path,fmt_input):    """ Return a list of filenames for all bmp images in a directory."""    return [os.path.join(path,f) for f in os.listdir(path) if f.endswith(fmt_input)]def convert_image_fmt(path, fmt_input,fmt_output):    im_list = get_imlist(path,fmt_input)    for infile in im_list:        outfile=os.path.splitext(infile)[0]+fmt_output        if infile != outfile:            try:                Image.open(infile).save(outfile)            except IOError:                    print "cannot convert", infile