ai-601.ipynb运行第一个cell出错

[WLwind]

我是在ubuntu18.04本地的jupyter-notbook中运行的，错误提示如下：

ConnectionRefusedError Traceback (most recent call last) /usr/lib/python3.6/urllib/request.py in do_open(self, http_class, req, **http_conn_args) 1317 h.request(req.get_method(), req.selector, req.data, headers, -> 1318 encode_chunked=req.has_header('Transfer-encoding')) 1319 except OSError as err: # timeout error

/usr/lib/python3.6/http/client.py in request(self, method, url, body, headers, encode_chunked) 1253 """Send a complete request to the server.""" -> 1254 self._send_request(method, url, body, headers, encode_chunked) 1255

/usr/lib/python3.6/http/client.py in _send_request(self, method, url, body, headers, encode_chunked) 1299 body = _encode(body, 'body') -> 1300 self.endheaders(body, encode_chunked=encode_chunked) 1301

/usr/lib/python3.6/http/client.py in endheaders(self, message_body, encode_chunked) 1248 raise CannotSendHeader() -> 1249 self._send_output(message_body, encode_chunked=encode_chunked) 1250

/usr/lib/python3.6/http/client.py in _send_output(self, message_body, encode_chunked) 1035 del self._buffer[:] -> 1036 self.send(msg) 1037

/usr/lib/python3.6/http/client.py in send(self, data) 973 if self.auto_open: --> 974 self.connect() 975 else:

/usr/lib/python3.6/http/client.py in connect(self) 1406 -> 1407 super().connect() 1408

/usr/lib/python3.6/http/client.py in connect(self) 945 self.sock = self._create_connection( --> 946 (self.host,self.port), self.timeout, self.source_address) 947 self.sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)

/usr/lib/python3.6/socket.py in create_connection(address, timeout, source_address) 723 if err is not None: --> 724 raise err 725 else:

/usr/lib/python3.6/socket.py in create_connection(address, timeout, source_address) 712 sock.bind(source_address) --> 713 sock.connect(sa) 714 # Break explicitly a reference cycle

ConnectionRefusedError: [Errno 111] Connection refused

During handling of the above exception, another exception occurred:

URLError Traceback (most recent call last) in 5 import numpy as np 6 url = 'https://raw.githubusercontent.com/MachineIntellect/DeepLearner/master/J.png' ----> 7 resp = request.urlopen(url) 8 s = resp.read() 9 imgG = Image.open(io.BytesIO(s)).convert('L')

/usr/lib/python3.6/urllib/request.py in urlopen(url, data, timeout, cafile, capath, cadefault, context) 221 else: 222 opener = _opener --> 223 return opener.open(url, data, timeout) 224 225 def install_opener(opener):

/usr/lib/python3.6/urllib/request.py in open(self, fullurl, data, timeout) 524 req = meth(req) 525 --> 526 response = self._open(req, data) 527 528 # post-process response

/usr/lib/python3.6/urllib/request.py in _open(self, req, data) 542 protocol = req.type 543 result = self._call_chain(self.handle_open, protocol, protocol + --> 544 '_open', req) 545 if result: 546 return result

/usr/lib/python3.6/urllib/request.py in _call_chain(self, chain, kind, meth_name, *args) 502 for handler in handlers: 503 func = getattr(handler, meth_name) --> 504 result = func(*args) 505 if result is not None: 506 return result

/usr/lib/python3.6/urllib/request.py in https_open(self, req) 1359 def https_open(self, req): 1360 return self.do_open(http.client.HTTPSConnection, req, -> 1361 context=self._context, check_hostname=self.check_hostname) 1362 1363 https_request = AbstractHTTPHandler.do_request

/usr/lib/python3.6/urllib/request.py in do_open(self, http_class, req, **http_conn_args) 1318 encode_chunked=req.has_header('Transfer-encoding')) 1319 except OSError as err: # timeout error -> 1320 raise URLError(err) 1321 r = h.getresponse() 1322 except:

URLError: <urlopen error [Errno 111] Connection refused>