client.py 文件源码

def default_urllib2_opener(config):
    if config is not None:
        proxy_server = config.get("http", "proxy")
    else:
        proxy_server = None
    handlers = []
    if proxy_server is not None:
        handlers.append(urllib2.ProxyHandler({"http": proxy_server}))
    opener = urllib2.build_opener(*handlers)
    if config is not None:
        user_agent = config.get("http", "useragent")
    else:
        user_agent = None
    if user_agent is None:
        user_agent = default_user_agent_string()
    opener.addheaders = [('User-agent', user_agent)]
    return opener