Crash in Python HTTP client when using a proxy

[bellegarde-c]

What did you do?

Trying to connect with a proxy enabled

What did you expect to happen?

Traceback (most recent call last):
  File "/usr/lib/python3.8/site-packages/pylast/__init__.py", line 917, in _download_response
    conn.request(
  File "/usr/lib/python3.8/http/client.py", line 1230, in request
    self._send_request(method, url, body, headers, encode_chunked)
  File "/usr/lib/python3.8/http/client.py", line 1276, in _send_request
    self.endheaders(body, encode_chunked=encode_chunked)
  File "/usr/lib/python3.8/http/client.py", line 1225, in endheaders
    self._send_output(message_body, encode_chunked=encode_chunked)
  File "/usr/lib/python3.8/http/client.py", line 1004, in _send_output
    self.send(msg)
  File "/usr/lib/python3.8/http/client.py", line 944, in send
    self.connect()
  File "/usr/lib/python3.8/http/client.py", line 1392, in connect
    super().connect()
  File "/usr/lib/python3.8/http/client.py", line 915, in connect
    self.sock = self._create_connection(
  File "/usr/lib/python3.8/socket.py", line 808, in create_connection
    raise err
  File "/usr/lib/python3.8/socket.py", line 791, in create_connection
    sock = socket(af, socktype, proto)
  File "/usr/lib/python3.8/socket.py", line 231, in __init__
    _socket.socket.__init__(self, family, type, proto, fileno)
OSError: [Errno 97] Address family not supported by protocol

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python3.8/site-packages/pylast/__init__.py", line 1078, in get_session_key
    doc = request.execute()
  File "/usr/lib/python3.8/site-packages/pylast/__init__.py", line 951, in execute
    response = self._download_response()
  File "/usr/lib/python3.8/site-packages/pylast/__init__.py", line 924, in _download_response
    raise NetworkError(self.network, e)
pylast.NetworkError: NetworkError: [Errno 97] Address family not supported by protocol

What versions of OS, Python and pylast are you using?

ArchLinux:
-python 3.8.1-4
-python-pylast 3.2.0-1

from pylast import LastFMNetwork, LibreFMNetwork, md5, WSError
from pylast import SessionKeyGenerator
API_KEY = "******************"
API_SECRET = ""******************""
last=LastFMNetwork(api_key=API_KEY, api_secret=API_SECRET)
last.enable_proxy("localhost", 8888)
skg = SessionKeyGenerator(last)
skg.get_session_key(username="*****", password_hash=md5("*******"))