pythonでデータが取得できない

Question

前提・実現したいこと

requests.get でデータが取得できません
どうやったら取得できるようになるかわかりますでしょうか?

発生している問題・エラーメッセージ

gaierror                                  Traceback (most recent call last)
/opt/anaconda3/lib/python3.7/site-packages/urllib3/connection.py in _new_conn(self)
    158             conn = connection.create_connection(
--> 159                 (self._dns_host, self.port), self.timeout, **extra_kw)
    160 

/opt/anaconda3/lib/python3.7/site-packages/urllib3/util/connection.py in create_connection(address, timeout, source_address, socket_options)
     56 
---> 57     for res in socket.getaddrinfo(host, port, family, socket.SOCK_STREAM):
     58         af, socktype, proto, canonname, sa = res

/opt/anaconda3/lib/python3.7/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 8] nodename nor servname provided, or not known

During handling of the above exception, another exception occurred:

NewConnectionError                        Traceback (most recent call last)
/opt/anaconda3/lib/python3.7/site-packages/urllib3/connectionpool.py in urlopen(self, method, url, body, headers, retries, redirect, assert_same_host, timeout, pool_timeout, release_conn, chunked, body_pos, **response_kw)
    599                                                   body=body, headers=headers,
--> 600                                                   chunked=chunked)
    601 

/opt/anaconda3/lib/python3.7/site-packages/urllib3/connectionpool.py in _make_request(self, conn, method, url, timeout, chunked, **httplib_request_kw)
    353         else:
--> 354             conn.request(method, url, **httplib_request_kw)
    355 

/opt/anaconda3/lib/python3.7/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 

/opt/anaconda3/lib/python3.7/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 

/opt/anaconda3/lib/python3.7/http/client.py in endheaders(self, message_body, encode_chunked)
   1238             raise CannotSendHeader()
-> 1239         self._send_output(message_body, encode_chunked=encode_chunked)
   1240 

/opt/anaconda3/lib/python3.7/http/client.py in _send_output(self, message_body, encode_chunked)
   1025         del self._buffer[:]
-> 1026         self.send(msg)
   1027 

/opt/anaconda3/lib/python3.7/http/client.py in send(self, data)
    965             if self.auto_open:
--> 966                 self.connect()
    967             else:

/opt/anaconda3/lib/python3.7/site-packages/urllib3/connection.py in connect(self)
    180     def connect(self):
--> 181         conn = self._new_conn()
    182         self._prepare_conn(conn)

/opt/anaconda3/lib/python3.7/site-packages/urllib3/connection.py in _new_conn(self)
    167             raise NewConnectionError(
--> 168                 self, "Failed to establish a new connection: %s" % e)
    169 

NewConnectionError: <urllib3.connection.HTTPConnection object at 0x1a18ccce90>: Failed to establish a new connection: [Errno 8] nodename nor servname provided, or not known

During handling of the above exception, another exception occurred:

MaxRetryError                             Traceback (most recent call last)
/opt/anaconda3/lib/python3.7/site-packages/requests/adapters.py in send(self, request, stream, timeout, verify, cert, proxies)
    448                     retries=self.max_retries,
--> 449                     timeout=timeout
    450                 )

/opt/anaconda3/lib/python3.7/site-packages/urllib3/connectionpool.py in urlopen(self, method, url, body, headers, retries, redirect, assert_same_host, timeout, pool_timeout, release_conn, chunked, body_pos, **response_kw)
    637             retries = retries.increment(method, url, error=e, _pool=self,
--> 638                                         _stacktrace=sys.exc_info()[2])
    639             retries.sleep()

/opt/anaconda3/lib/python3.7/site-packages/urllib3/util/retry.py in increment(self, method, url, response, error, _pool, _stacktrace)
    398         if new_retry.is_exhausted():
--> 399             raise MaxRetryError(_pool, url, error or ResponseError(cause))
    400 

MaxRetryError: HTTPConnectionPool(host='archive.ics.ucs.edu', port=80): Max retries exceeded with url: /m1/machine-learing-databases/00356/student.zip (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x1a18ccce90>: Failed to establish a new connection: [Errno 8] nodename nor servname provided, or not known'))

During handling of the above exception, another exception occurred:

ConnectionError                           Traceback (most recent call last)
<ipython-input-168-e07f1d1d59ec> in <module>
----> 1 r = requests.get(url, stream=True)

/opt/anaconda3/lib/python3.7/site-packages/requests/api.py in get(url, params, **kwargs)
     73 
     74     kwargs.setdefault('allow_redirects', True)
---> 75     return request('get', url, params=params, **kwargs)
     76 
     77 

/opt/anaconda3/lib/python3.7/site-packages/requests/api.py in request(method, url, **kwargs)
     58     # cases, and look like a memory leak in others.
     59     with sessions.Session() as session:
---> 60         return session.request(method=method, url=url, **kwargs)
     61 
     62 

/opt/anaconda3/lib/python3.7/site-packages/requests/sessions.py in request(self, method, url, params, data, headers, cookies, files, auth, timeout, allow_redirects, proxies, hooks, stream, verify, cert, json)
    531         }
    532         send_kwargs.update(settings)
--> 533         resp = self.send(prep, **send_kwargs)
    534 
    535         return resp

/opt/anaconda3/lib/python3.7/site-packages/requests/sessions.py in send(self, request, **kwargs)
    644 
    645         # Send the request
--> 646         r = adapter.send(request, **kwargs)
    647 
    648         # Total elapsed time of the request (approximately)

/opt/anaconda3/lib/python3.7/site-packages/requests/adapters.py in send(self, request, stream, timeout, verify, cert, proxies)
    514                 raise SSLError(e, request=request)
    515 
--> 516             raise ConnectionError(e, request=request)
    517 
    518         except ClosedPoolError as e:

ConnectionError: HTTPConnectionPool(host='archive.ics.ucs.edu', port=80): Max retries exceeded with url: /m1/machine-learing-databases/00356/student.zip (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x1a18ccce90>: Failed to establish a new connection: [Errno 8] nodename nor servname provided, or not known'))

該当のソースコード

import requests, zipfile
from io import StringIO
import io

url = "http://archive.ics.ucs.edu/m1/machine-learing-databases/00356/student.zip"

r = requests.get(url, stream=True)

試したこと

ここに問題に対して試したことを記載してください。

補足情報（FW/ツールのバージョンなど）

ここにより詳細な情報を記載してください。

Answer 1

どうやったら取得できるようになるかわかりますでしょうか?

ブラウザにその URL を入力してみるとわかりますが、そもそもアクセスしようとしているリンク先が存在しません。

Answer 2

なんらかの書籍を写されたのでしょうか？URLに何カ所か誤字があるようです。

import requests, zipfile
from io import StringIO
import io

url = "http://archive.ics.ucs.edu/m1/machine-learing-databases/00356/student.zip" # 誤
url = "http://archive.ics.uci.edu/ml/machine-learning-databases/00356/student.zip"# 正
r = requests.get(url, stream=True)
print(r)
# <Response [200]>

Answer 3

アクセスしようとしているサイトを見つけられません。

archive.ics.ucs.edu という名前のサーバーに接続できません。

とでますが。