恰巧发现有个叫“EarthLiveSharp”，可用将日本向日葵8号卫星的地球实时图片设为屏保。向日葵8号卫星的地球实时图片官网为：http://himawari8.nict.go.jp/，EarthLiveSharp的项目地址是：https://github.com/bitdust/EarthLiveSharp。
为了减轻向日葵8号的服务器负担，同时也是提高地球实时图片的获取成功率，需要使用cloudinary来做CDN。注册配置都在软件里有说明。

目前EarthLiveSharp暂时没有清理cloudinary的CDN图片缓存的功能，于是我用python写了一个，并尝试用gist管理，地址为：https://gist.github.com/creke/c5a8a18fa41b8f5c1a0719a7e0cf4de6

同时，为了大家方便，顺便编译成了Windows可执行文件，下载： https://pan.baidu.com/s/1c27fXEo 提取码：k33n
为了自己检索方便，顺便在这里附上python脚本源码，可以作为python如何使用RESTful接口的例子，相关工具类函数也便于参考。

EarthLiveCleanCloudinary.py

# -*- coding: utf-8 -*-# Author: Creke# HomePage: http://blog.creke.netimport sysimport urllib, urllib2import base64import jsonURLLIB_DEBUG_LEVEL = 1URLLIB_TIMEOUT = 5def Dict2Uri(dic): return urllib.urlencode(dic)def GenUrllibReq(url, method, api_key, api_secret, post_data=None): urlreq = None if post_data is None: urlreq = urllib2.Request(url) else: urlreq = urllib2.Request(url, post_data) urlreq.get_method = lambda: method auth_str = base64.b64encode('%s:%s' % (api_key, api_secret)) urlreq.add_header("Authorization", "Basic %s" % auth_str) urlreq.add_header('Cache-Control', 'no-cache') return urlreqdef GetApiDelUrl(cloud_name, img_type): url = "https://api.cloudinary.com/v1_1/%s/resources/image/%s" % (cloud_name, img_type) params = {"prefix": "http://himawari8-dl"} url = url + "?" + Dict2Uri(params) return urldef main(argv): arg_idx = 1 api_key = argv[arg_idx] arg_idx += 1 api_secret = argv[arg_idx] arg_idx += 1 cloud_name = argv[arg_idx] while True: del_url = GetApiDelUrl(cloud_name, 'fetch') urlreq = GenUrllibReq(del_url, 'DELETE', api_key, api_secret) print "===========================" print "Requesting %s" % (del_url) opener = urllib2.build_opener(urllib2.HTTPSHandler(debuglevel=URLLIB_DEBUG_LEVEL)) urllib_open = opener.open(urlreq, timeout=URLLIB_TIMEOUT) response = urllib_open.read() print "===========================" print "Response:" print "%s" % (response) print "===========================" urllib_open.close() print "Done Requesting" res_json = json.loads(response) deleted_cnt = len(res_json['deleted']) print "Deleted %u himawari8 pics" % (deleted_cnt) print "===========================" if 'next_cursor' in res_json and deleted_cnt>0: print "Due to Cloudinary limits, we're starting a new round" else: break return 0def PrintHelp(argv): print "\t USAGE: %s [api_key] [api_secret] [cloud_name]" % (argv[0])if __name__ == '__main__': if len(sys.argv) < 4: PrintHelp(sys.argv) exit(1) print "RUNNING main" main(sys.argv) print "DONE main"

EarthLiveCleanCloudinary2exe.py

# -*- coding: utf-8 -*-# Author: Creke# HomePage: http://blog.creke.netfrom distutils.core import setupimport py2exesetup(console=['EarthLiveCleanCloudinary.py'])

Windows编译版本下载：

链接: https://pan.baidu.com/s/1skADZeH 密码: rdgb