Bonjour, besoin de votre aide svp 

j'essaie d'importer le jeu de donnée 

from sklearn.datasets import fetch_openml
mnist = fetch_openml('mnist_784', version=1)

j'obtiens ce message d'erreur,

Warning (from warnings module):
File "C:\Python\Lib\site-packages\sklearn\datasets\_openml.py", line 110
warn(
UserWarning: A network error occurred while downloading https://api.openml.org/api/v1/json/data/list/data_name/mnist_784/limit/2/data_version/1. Retrying...
Traceback (most recent call last):
File "C:\Python\Lib\urllib\request.py", line 1344, in do_open
h.request(req.get_method(), req.selector, req.data, headers,
File "C:\Python\Lib\http\client.py", line 1319, in request
self._send_request(method, url, body, headers, encode_chunked)
File "C:\Python\Lib\http\client.py", line 1365, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File "C:\Python\Lib\http\client.py", line 1314, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File "C:\Python\Lib\http\client.py", line 1074, in _send_output
self.send(msg)
File "C:\Python\Lib\http\client.py", line 1018, in send
self.connect()
File "C:\Python\Lib\http\client.py", line 1460, in connect
self.sock = self._context.wrap_socket(self.sock,
File "C:\Python\Lib\ssl.py", line 455, in wrap_socket
return self.sslsocket_class._create(
File "C:\Python\Lib\ssl.py", line 1046, in _create
self.do_handshake()
File "C:\Python\Lib\ssl.py", line 1317, in do_handshake
self._sslobj.do_handshake()
ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1000)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "<pyshell#1>", line 1, in <module>
mnist = fetch_openml('mnist_784', version=1)
File "C:\Python\Lib\site-packages\sklearn\utils\_param_validation.py", line 211, in wrapper
return func(*args, **kwargs)
File "C:\Python\Lib\site-packages\sklearn\datasets\_openml.py", line 980, in fetch_openml
data_info = _get_data_info_by_name(
File "C:\Python\Lib\site-packages\sklearn\datasets\_openml.py", line 322, in _get_data_info_by_name
json_data = _get_json_content_from_openml_api(
File "C:\Python\Lib\site-packages\sklearn\datasets\_openml.py", line 246, in _get_json_content_from_openml_api
return _load_json()
File "C:\Python\Lib\site-packages\sklearn\datasets\_openml.py", line 67, in wrapper
return f(*args, **kw)
File "C:\Python\Lib\site-packages\sklearn\datasets\_openml.py", line 241, in _load_json
_open_openml_url(url, data_home, n_retries=n_retries, delay=delay)
File "C:\Python\Lib\site-packages\sklearn\datasets\_openml.py", line 173, in _open_openml_url
_retry_on_network_error(n_retries, delay, req.full_url)(urlopen)(
File "C:\Python\Lib\site-packages\sklearn\datasets\_openml.py", line 103, in wrapper
return f(*args, **kwargs)
File "C:\Python\Lib\urllib\request.py", line 215, in urlopen
return opener.open(url, data, timeout)
File "C:\Python\Lib\urllib\request.py", line 515, in open
response = self._open(req, data)
File "C:\Python\Lib\urllib\request.py", line 532, in _open
result = self._call_chain(self.handle_open, protocol, protocol +
File "C:\Python\Lib\urllib\request.py", line 492, in _call_chain
result = func(*args)
File "C:\Python\Lib\urllib\request.py", line 1392, in https_open
return self.do_open(http.client.HTTPSConnection, req,
File "C:\Python\Lib\urllib\request.py", line 1347, in do_open
raise URLError(err)
urllib.error.URLError: <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1000)>

 j'ai déjà essayé ces  transactions 

C:\Users\Workdoc>pip install Certifi

C:\Users\Workdoc>python --version
Python 3.12.0

Requirement already satisfied: Certifi in c:\python\lib\site-packages (2023.7.22)