adapters.py 文件源码

def get_connection(self, url, proxies=None):
        proxies = proxies or {}
        proxy = proxies.get(urlparse(url.lower()).scheme)

        if proxy:
            raise ValueError('%s does not support specifying proxies'
                             % self.__class__.__name__)

        with self.pools.lock:
            pool = self.pools.get(url)
            if pool:
                return pool

            pool = UnixHTTPConnectionPool(url, self.timeout)
            self.pools[url] = pool

        return pool