Fail to connect to localhost:8086

I have followed the instructions on https://www.influxdata.com/blog/getting-started-python-influxdb/ (first pip install influxdb, and then run the script), but it reports the connection error
```
>>> from influxdb import InfluxDBClient
>>> client = InfluxDBClient(host='localhost', port=8086)
>>> client.create_database('pyexample')
Traceback (most recent call last):
File "/mnt/c/Users/ThinkPad/source/temp/env/lib/python3.6/site-packages/urllib3/connection.py", line 160, in _new_conn (self._dns_host, self.port), self.timeout, **extra_kw
File "/mnt/c/Users/ThinkPad/source/temp/env/lib/python3.6/site-packages/urllib3/util/connection.py", line 84, in create_connection
raise err
File "/mnt/c/Users/ThinkPad/source/temp/env/lib/python3.6/site-packages/urllib3/util/connection.py", line 74, in create_connection
sock.connect(sa)
ConnectionRefusedError: [Errno 111] Connection refused

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/mnt/c/Users/ThinkPad/source/temp/env/lib/python3.6/site-packages/urllib3/connectionpool.py", line 677, in urlopen
chunked=chunked,
File "/mnt/c/Users/ThinkPad/source/temp/env/lib/python3.6/site-packages/urllib3/connectionpool.py", line 392, in _make_request
conn.request(method, url, **httplib_request_kw)
File "/usr/lib/python3.6/http/client.py", line 1254, in request
self._send_request(method, url, body, headers, encode_chunked)
File "/usr/lib/python3.6/http/client.py", line 1300, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File "/usr/lib/python3.6/http/client.py", line 1249, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File "/usr/lib/python3.6/http/client.py", line 1036, in _send_output
self.send(msg)
File "/usr/lib/python3.6/http/client.py", line 974, in send
self.connect()
File "/mnt/c/Users/ThinkPad/source/temp/env/lib/python3.6/site-packages/urllib3/connection.py", line 187, in connect
conn = self._new_conn()
File "/mnt/c/Users/ThinkPad/source/temp/env/lib/python3.6/site-packages/urllib3/connection.py", line 172, in _new_conn self, "Failed to establish a new connection: %s" % e
urllib3.exceptions.NewConnectionError: : Failed to establish a new connection: [Errno 111] Connection refused

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/mnt/c/Users/ThinkPad/source/temp/env/lib/python3.6/site-packages/requests/adapters.py", line 449, in send
timeout=timeout
File "/mnt/c/Users/ThinkPad/source/temp/env/lib/python3.6/site-packages/urllib3/connectionpool.py", line 725, in urlopen
method, url, error=e, _pool=self, _stacktrace=sys.exc_info()[2]
File "/mnt/c/Users/ThinkPad/source/temp/env/lib/python3.6/site-packages/urllib3/util/retry.py", line 439, in increment raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPConnectionPool(host='localhost', port=8086): Max retries exceeded with url: /query?q=CREATE+DATABASE+%22pyexample%22 (Caused by NewConnectionError(': Failed to establish a new connection: [Errno 111] Connection refused',))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "", line 1, in
File "/mnt/c/Users/ThinkPad/source/temp/env/lib/python3.6/site-packages/influxdb/client.py", line 738, in create_database
method="POST")
File "/mnt/c/Users/ThinkPad/source/temp/env/lib/python3.6/site-packages/influxdb/client.py", line 518, in query
expected_response_code=expected_response_code
File "/mnt/c/Users/ThinkPad/source/temp/env/lib/python3.6/site-packages/influxdb/client.py", line 333, in request
timeout=self._timeout
File "/mnt/c/Users/ThinkPad/source/temp/env/lib/python3.6/site-packages/requests/sessions.py", line 530, in request
resp = self.send(prep, **send_kwargs)
File "/mnt/c/Users/ThinkPad/source/temp/env/lib/python3.6/site-packages/requests/sessions.py", line 643, in send
r = adapter.send(request, **kwargs)
File "/mnt/c/Users/ThinkPad/source/temp/env/lib/python3.6/site-packages/requests/adapters.py", line 516, in send
raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPConnectionPool(host='localhost', port=8086): Max retries exceeded with url: /query?q=CREATE+DATABASE+%22pyexample%22 (Caused by NewConnectionError(': Failed to establish a new connection: [Errno 111] Connection refused',))
```

Start by reviewing the linked Python InfluxDB getting-started instructions and the reported InfluxDBClient call to localhost:8086. Check whether the report identifies a reproducible product failure rather than an unavailable local service; done requires a confirmed project-side cause and a specific fix or documented resolution.

Written by the indexing model from the issue text.