复制代码 代码如下:
def getRemoteFileSize(url, proxy=None):
\”\”\” 通过content-length头获取远程文件大小
url – 目标文件URL
proxy – 代理 \”\”\”
opener = urllib2.build_opener()
if proxy:
if url.lower().startswith(\’https://\’):
opener.add_handler(urllib2.ProxyHandler({\’https\’ : proxy}))
else:
opener.add_handler(urllib2.ProxyHandler({\’http\’ : proxy}))
try:
request = urllib2.Request(url)
request.get_method = lambda: \’HEAD\’
response = opener.open(request)
response.read()
except Exception, e: # 远程文件不存在
return 0
else:
fileSize = dict(response.headers).get(\’content-length\’, 0)
return int(fileSize)