Bk1_Ch05_19，注释错误

[zptsqh0202]

第三个注释，
pdf上写的是

#查看数据集的前五行
iris_df.head()
type(iris_df)

//要查看数据集的前五行，应该是
print（iris_df.head(5)）

[kbeckham1987]

我想请教下，我输入import seaborn as sns后运行，没有输出结果也没报错，应该是运行成功了
但是再输入iris_df = sns.load_dataset("iris")后运行，直接就报了下面的错误：

gaierror Traceback (most recent call last)
File C:\ProgramData\anaconda3\Lib\urllib\request.py:1344, in AbstractHTTPHandler.do_open(self, http_class, req, **http_conn_args)
1343 try:
-> 1344 h.request(req.get_method(), req.selector, req.data, headers,
1345 encode_chunked=req.has_header('Transfer-encoding'))
1346 except OSError as err: # timeout error

File C:\ProgramData\anaconda3\Lib\http\client.py:1336, in HTTPConnection.request(self, method, url, body, headers, encode_chunked)
1335 """Send a complete request to the server."""
-> 1336 self._send_request(method, url, body, headers, encode_chunked)

File C:\ProgramData\anaconda3\Lib\http\client.py:1382, in HTTPConnection._send_request(self, method, url, body, headers, encode_chunked)
1381 body = _encode(body, 'body')
-> 1382 self.endheaders(body, encode_chunked=encode_chunked)

File C:\ProgramData\anaconda3\Lib\http\client.py:1331, in HTTPConnection.endheaders(self, message_body, encode_chunked)
1330 raise CannotSendHeader()
-> 1331 self._send_output(message_body, encode_chunked=encode_chunked)

File C:\ProgramData\anaconda3\Lib\http\client.py:1091, in HTTPConnection._send_output(self, message_body, encode_chunked)
1090 del self._buffer[:]
-> 1091 self.send(msg)
1093 if message_body is not None:
1094
1095 # create a consistent interface to message_body

File C:\ProgramData\anaconda3\Lib\http\client.py:1035, in HTTPConnection.send(self, data)
1034 if self.auto_open:
-> 1035 self.connect()
1036 else:

File C:\ProgramData\anaconda3\Lib\http\client.py:1470, in HTTPSConnection.connect(self)
1468 "Connect to a host on a given (SSL) port."
-> 1470 super().connect()
1472 if self._tunnel_host:

File C:\ProgramData\anaconda3\Lib\http\client.py:1001, in HTTPConnection.connect(self)
1000 sys.audit("http.client.connect", self, self.host, self.port)
-> 1001 self.sock = self._create_connection(
1002 (self.host,self.port), self.timeout, self.source_address)
1003 # Might fail in OSs that don't implement TCP_NODELAY

File C:\ProgramData\anaconda3\Lib\socket.py:841, in create_connection(address, timeout, source_address, all_errors)
840 exceptions = []
--> 841 for res in getaddrinfo(host, port, 0, SOCK_STREAM):
842 af, socktype, proto, canonname, sa = res

File C:\ProgramData\anaconda3\Lib\socket.py:976, in getaddrinfo(host, port, family, type, proto, flags)
975 addrlist = []
--> 976 for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
977 af, socktype, proto, canonname, sa = res

gaierror: [Errno 11001] getaddrinfo failed

During handling of the above exception, another exception occurred:

URLError Traceback (most recent call last)
Cell In[12], line 2
1 import seaborn as sns
----> 2 iris_df = sns.load_dataset("iris")

File C:\ProgramData\anaconda3\Lib\site-packages\seaborn\utils.py:572, in load_dataset(name, cache, data_home, **kws)
570 cache_path = os.path.join(get_data_home(data_home), os.path.basename(url))
571 if not os.path.exists(cache_path):
--> 572 if name not in get_dataset_names():
573 raise ValueError(f"'{name}' is not one of the example datasets.")
574 urlretrieve(url, cache_path)

File C:\ProgramData\anaconda3\Lib\site-packages\seaborn\utils.py:499, in get_dataset_names()
493 def get_dataset_names():
494 """Report available example datasets, useful for reporting issues.
495
496 Requires an internet connection.
497
498 """
--> 499 with urlopen(DATASET_NAMES_URL) as resp:
500 txt = resp.read()
502 dataset_names = [name.strip() for name in txt.decode().split("\n")]

File C:\ProgramData\anaconda3\Lib\urllib\request.py:215, in urlopen(url, data, timeout, cafile, capath, cadefault, context)
213 else:
214 opener = _opener
--> 215 return opener.open(url, data, timeout)

File C:\ProgramData\anaconda3\Lib\urllib\request.py:515, in OpenerDirector.open(self, fullurl, data, timeout)
512 req = meth(req)
514 sys.audit('urllib.Request', req.full_url, req.data, req.headers, req.get_method())
--> 515 response = self._open(req, data)
517 # post-process response
518 meth_name = protocol+"_response"

File C:\ProgramData\anaconda3\Lib\urllib\request.py:532, in OpenerDirector._open(self, req, data)
529 return result
531 protocol = req.type
--> 532 result = self._call_chain(self.handle_open, protocol, protocol +
533 '_open', req)
534 if result:
535 return result

File C:\ProgramData\anaconda3\Lib\urllib\request.py:492, in OpenerDirector._call_chain(self, chain, kind, meth_name, *args)
490 for handler in handlers:
491 func = getattr(handler, meth_name)
--> 492 result = func(*args)
493 if result is not None:
494 return result

File C:\ProgramData\anaconda3\Lib\urllib\request.py:1392, in HTTPSHandler.https_open(self, req)
1391 def https_open(self, req):
-> 1392 return self.do_open(http.client.HTTPSConnection, req,
1393 context=self._context)

File C:\ProgramData\anaconda3\Lib\urllib\request.py:1347, in AbstractHTTPHandler.do_open(self, http_class, req, **http_conn_args)
1344 h.request(req.get_method(), req.selector, req.data, headers,
1345 encode_chunked=req.has_header('Transfer-encoding'))
1346 except OSError as err: # timeout error
-> 1347 raise URLError(err)
1348 r = h.getresponse()
1349 except:

URLError: <urlopen error [Errno 11001] getaddrinfo failed>
网上搜了很久也没解决问题，请问怎么处理？