批量处理当前目录及子目录图片缩略图，使用imagemagick

convert.py

#!/usr/bin/env python
# -*- coding:utf-8 -*-

import os, sys

iswindows = 'win32' in sys.platform.lower() or 'win64' in sys.platform.lower()
isosx     = 'darwin' in sys.platform.lower()

def convert(dirname, size='640x640'):

    for filename in os.listdir(dirname):
    
        if filename == "thumbs":
            continue
    
        filename = os.path.join(dirname, filename)
    
        if os.path.isdir(filename):
            convert(filename, size)
        elif filename.lower().endswith("jpg"):
        
            thumb_filename = os.path.join("thumbs", filename)
            thumb_dirname = os.path.join("thumbs", dirname)
            
            if not os.path.isdir(thumb_dirname):
                os.makedirs(thumb_dirname)
            
            if iswindows:
                cmd = "convert.exe %s -resize %s %s" % (filename, size, thumb_filename)
                print u"处理：".encode('cp936'), filename
            else:
                cmd = "convert %s -resize %s %s" % (filename, size, thumb_filename)
                print "处理：", filename
            
            os.system(cmd)
            
if __name__ == "__main__":

    if len(sys.argv) >= 2:
        size = sys.argv[1]
    else:
        size = "640x640"
    
    convert('.', size)

    if iswindows:
        raw_input(u"处理完成，按任意键退出...".encode('cp936'))