import urllib2 def file_exists(url): request = urllib2.Request(url) request.get_method = lambda : ‘HEAD‘ try: response = urllib2.urlopen(request) return True except: return False
原文地址：http://mysrc.sinaapp.com/view_note/?id=395
原文：http://www.cnblogs.com/JarningGau/p/5339862.html