tutorial python examples/vww.py not work in python 3.8

[xpsheng]

Using Windows WSL setup, environment info like below:
Ubuntu 20.04.3 LTS (GNU/Linux 5.10.16.3-microsoft-standard-WSL2 x86_64)
python 3.8.10 by default.

Follow the related setup from tutorial
https://github.com/mit-han-lab/tinyengine/tree/main/tutorial/inference
There got following error.
Could tinyengine development pointout what's the problem there?
or current setup verify/support only in python 3.6 not for other newer version?

(tinyengine) sxp@JJ-S1:~/tinyengine$ python examples/vww.py
Downloading: "https://hanlab.mit.edu/projects/tinyml/mcunet/release/mcunet-5fps_vww.tflite" to /home/sxp/.torch/mcunet/mcunet-5fps_vww.tflite
Traceback (most recent call last):
File "/home/sxp/miniconda3/envs/tinyengine/lib/python3.8/urllib/request.py", line 1354, in do_open
h.request(req.get_method(), req.selector, req.data, headers,
File "/home/sxp/miniconda3/envs/tinyengine/lib/python3.8/http/client.py", line 1252, in request
self._send_request(method, url, body, headers, encode_chunked)
File "/home/sxp/miniconda3/envs/tinyengine/lib/python3.8/http/client.py", line 1298, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File "/home/sxp/miniconda3/envs/tinyengine/lib/python3.8/http/client.py", line 1247, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File "/home/sxp/miniconda3/envs/tinyengine/lib/python3.8/http/client.py", line 1007, in _send_output
self.send(msg)
File "/home/sxp/miniconda3/envs/tinyengine/lib/python3.8/http/client.py", line 947, in send
self.connect()
File "/home/sxp/miniconda3/envs/tinyengine/lib/python3.8/http/client.py", line 1421, in connect
self.sock = self._context.wrap_socket(self.sock,
File "/home/sxp/miniconda3/envs/tinyengine/lib/python3.8/ssl.py", line 500, in wrap_socket
return self.sslsocket_class._create(
File "/home/sxp/miniconda3/envs/tinyengine/lib/python3.8/ssl.py", line 1040, in _create
self.do_handshake()
File "/home/sxp/miniconda3/envs/tinyengine/lib/python3.8/ssl.py", line 1309, in do_handshake
self._sslobj.do_handshake()
ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1131)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/sxp/tinyengine/mcunet/mcunet/utils/common_tools.py", line 104, in download_url
urlretrieve(url, cached_file)
File "/home/sxp/miniconda3/envs/tinyengine/lib/python3.8/urllib/request.py", line 247, in urlretrieve
with contextlib.closing(urlopen(url, data)) as fp:
File "/home/sxp/miniconda3/envs/tinyengine/lib/python3.8/urllib/request.py", line 222, in urlopen
return opener.open(url, data, timeout)
File "/home/sxp/miniconda3/envs/tinyengine/lib/python3.8/urllib/request.py", line 525, in open
response = self._open(req, data)
File "/home/sxp/miniconda3/envs/tinyengine/lib/python3.8/urllib/request.py", line 542, in _open
result = self._call_chain(self.handle_open, protocol, protocol +
File "/home/sxp/miniconda3/envs/tinyengine/lib/python3.8/urllib/request.py", line 502, in _call_chain
result = func(*args)
File "/home/sxp/miniconda3/envs/tinyengine/lib/python3.8/urllib/request.py", line 1397, in https_open
return self.do_open(http.client.HTTPSConnection, req,
File "/home/sxp/miniconda3/envs/tinyengine/lib/python3.8/urllib/request.py", line 1357, 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:1131)>

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "examples/vww.py", line 25, in
tflite_path = download_tflite(net_id="mcunet-vww1")
File "/home/sxp/tinyengine/mcunet/mcunet/model_zoo.py", line 91, in download_tflite
return download_url(tflite_url) # the file path of the downloaded tflite model
File "/home/sxp/tinyengine/mcunet/mcunet/utils/common_tools.py", line 108, in download_url
os.remove(os.path.join(model_dir, 'download.lock'))
FileNotFoundError: [Errno 2] No such file or directory: '/home/sxp/.torch/mcunet/mcunet-5fps_vww.tflite/download.lock'

[keltonlee]

Hello, I have the same problem now, did you solve this?