Python获取远程文件大小的函数代码分享

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)