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Script not working, Tunnel Connection Failed (Proxy error maybe)

Trying to webscrap using request urllib and sending an email.Below is the error I recieve:

Traceback (most recent call last):
  File "/usr/lib/python3.6/urllib/request.py", line 1318, in do_open
    encode_chunked=req.has_header('Transfer-encoding'))
  File "/usr/lib/python3.6/http/client.py", line 1239, in request
    self._send_request(method, url, body, headers, encode_chunked)
  File "/usr/lib/python3.6/http/client.py", line 1285, in _send_request
    self.endheaders(body, encode_chunked=encode_chunked)
  File "/usr/lib/python3.6/http/client.py", line 1234, in endheaders
    self._send_output(message_body, encode_chunked=encode_chunked)
  File "/usr/lib/python3.6/http/client.py", line 1026, in _send_output
    self.send(msg)
  File "/usr/lib/python3.6/http/client.py", line 964, in send
    self.connect()
  File "/usr/lib/python3.6/http/client.py", line 1392, in connect
    super().connect()
  File "/usr/lib/python3.6/http/client.py", line 940, in connect
    self._tunnel()
  File "/usr/lib/python3.6/http/client.py", line 919, in _tunnel
    message.strip()))
OSError: Tunnel connection failed: 403 Forbidden

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/Lakshyasukhralia/ws.py", line 78, in <module>
  File "/usr/lib/python3.6/http/client.py", line 940, in connect
    Proc(user_data)
  File "/home/Lakshyasukhralia/ws.py", line 40, in Proc
    response = urllib.request.urlopen(request)
  File "/usr/lib/python3.6/urllib/request.py", line 223, in urlopen
    return opener.open(url, data, timeout)
  File "/usr/lib/python3.6/urllib/request.py", line 526, in open
    response = self._open(req, data)
  File "/usr/lib/python3.6/urllib/request.py", line 544, in _open
    '_open', req)
  File "/usr/lib/python3.6/urllib/request.py", line 504, in _call_chain
    result = func(*args)
  File "/usr/lib/python3.6/urllib/request.py", line 1361, in https_open
    context=self._context, check_hostname=self._check_hostname)
  File "/usr/lib/python3.6/urllib/request.py", line 1320, in do_open
    raise URLError(err)
urllib.error.URLError: <urlopen error Tunnel connection failed: 403 Forbidden>

[edit by admin: formatting]

It looks like you're trying to connect to a website that's not on our whitelist -- there's more information here.