深度学习之路—sns.load_dataset(iris)报空指针和读取错误问题

今天上课的时候老师的样例用到了iris数据样例
import seaborn的时候报错了
于是我就用pip安装了一个seaborn
后来在调用

sns.load_dataset("iris")

的时候报了一堆错误

---------------------------------------------------------------------------
gaierror                                  Traceback (most recent call last)
d:\anaconda\envs\tf2.0.0rc1\lib\urllib\request.py in do_open(self, http_class, req, **http_conn_args)
   1316                 h.request(req.get_method(), req.selector, req.data, headers,
-> 1317                           encode_chunked=req.has_header('Transfer-encoding'))
   1318             except OSError as err: # timeout error

d:\anaconda\envs\tf2.0.0rc1\lib\http\client.py in request(self, method, url, body, headers, encode_chunked)
   1243         """Send a complete request to the server."""
-> 1244         self._send_request(method, url, body, headers, encode_chunked)
   1245

d:\anaconda\envs\tf2.0.0rc1\lib\http\client.py in _send_request(self, method, url, body, headers, encode_chunked)
   1289             body = _encode(body, 'body')
-> 1290         self.endheaders(body, encode_chunked=encode_chunked)
   1291

d:\anaconda\envs\tf2.0.0rc1\lib\http\client.py in endheaders(self, message_body, encode_chunked)
   1238             raise CannotSendHeader()
-> 1239         self._send_output(message_body, encode_chunked=encode_chunked)
   1240

d:\anaconda\envs\tf2.0.0rc1\lib\http\client.py in _send_output(self, message_body, encode_chunked)
   1025         del self._buffer[:]
-> 1026         self.send(msg)
   1027

d:\anaconda\envs\tf2.0.0rc1\lib\http\client.py in send(self, data)
    965             if self.auto_open:
--> 966                 self.connect()
    967             else:

d:\anaconda\envs\tf2.0.0rc1\lib\http\client.py in connect(self)
   1405
-> 1406             super().connect()
   1407

d:\anaconda\envs\tf2.0.0rc1\lib\http\client.py in connect(self)
    937         self.sock = self._create_connection(
--> 938             (self.host,self.port), self.timeout, self.source_address)
    939         self.sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)

d:\anaconda\envs\tf2.0.0rc1\lib\socket.py in create_connection(address, timeout, source_address)
    706     err = None
--> 707     for res in getaddrinfo(host, port, 0, SOCK_STREAM):
    708         af, socktype, proto, canonname, sa = res

d:\anaconda\envs\tf2.0.0rc1\lib\socket.py in getaddrinfo(host, port, family, type, proto, flags)
    747     addrlist = []
--> 748     for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
    749         af, socktype, proto, canonname, sa = res

gaierror: [Errno 11004] getaddrinfo failed

During handling of the above exception, another exception occurred:

URLError                                  Traceback (most recent call last)
<ipython-input-6-7001b965feec> in <module>
----> 1 iris = sns.load_dataset("iris")

d:\anaconda\envs\tf2.0.0rc1\lib\site-packages\seaborn\utils.py in load_dataset(name, cache, data_home, **kws)
    447                                   os.path.basename(full_path))
    448         if not os.path.exists(cache_path):
--> 449             urlretrieve(full_path, cache_path)
    450         full_path = cache_path
    451

d:\anaconda\envs\tf2.0.0rc1\lib\urllib\request.py in urlretrieve(url, filename, reporthook, data)
    245     url_type, path = splittype(url)
    246
--> 247     with contextlib.closing(urlopen(url, data)) as fp:
    248         headers = fp.info()
    249

d:\anaconda\envs\tf2.0.0rc1\lib\urllib\request.py in urlopen(url, data, timeout, cafile, capath, cadefault, context)
    220     else:
    221         opener = _opener
--> 222     return opener.open(url, data, timeout)
    223
    224 def install_opener(opener):

d:\anaconda\envs\tf2.0.0rc1\lib\urllib\request.py in open(self, fullurl, data, timeout)
    523             req = meth(req)
    524
--> 525         response = self._open(req, data)
    526
    527         # post-process response

d:\anaconda\envs\tf2.0.0rc1\lib\urllib\request.py in _open(self, req, data)
    541         protocol = req.type
    542         result = self._call_chain(self.handle_open, protocol, protocol +
--> 543                                   '_open', req)
    544         if result:
    545             return result

d:\anaconda\envs\tf2.0.0rc1\lib\urllib\request.py in _call_chain(self, chain, kind, meth_name, *args)
    501         for handler in handlers:
    502             func = getattr(handler, meth_name)
--> 503             result = func(*args)
    504             if result is not None:
    505                 return result

d:\anaconda\envs\tf2.0.0rc1\lib\urllib\request.py in https_open(self, req)
   1358         def https_open(self, req):
   1359             return self.do_open(http.client.HTTPSConnection, req,
-> 1360                 context=self._context, check_hostname=self._check_hostname)
   1361
   1362         https_request = AbstractHTTPHandler.do_request_

d:\anaconda\envs\tf2.0.0rc1\lib\urllib\request.py in do_open(self, http_class, req, **http_conn_args)
   1317                           encode_chunked=req.has_header('Transfer-encoding'))
   1318             except OSError as err: # timeout error
-> 1319                 raise URLError(err)
   1320             r = h.getresponse()
   1321         except:

URLError: <urlopen error [Errno 11004] getaddrinfo failed>

仔细研究了一下，基本都是空指针问题，为什么空指针，都指向了打开文件的那部分空指针了
然后我就去看一下数据集，发现seaborn-data文件夹居然是空的，没这些文件当然空指针了

ps:我的所有通过pip安装的数据集，包括NMIST都是在用户文件夹中
我也不知道怎么设置别的地方，hhh

在github找到官方的seaborn-data
seaborn-data数据集
下载下来，放进那个文件夹中

好了，不报错了