以下のようなエラーになります。OSはjessie バージョン 8.0 です。よろしくお願いいたします。
pi@raspberrypi:~ $ pip install scipy
Collecting scipy
Retrying (Retry(total=4, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x75fe09f0>: Failed to establish a new connection: [Errno -2] Name or service not known',...