TypeError from websocket.py

[sslupsky]

Recent commit appears to be causing a TypeError: cb60792

Here is the error:

Exception in thread WebSocketClient:
Traceback (most recent call last):
  File "/Users/stevenslupsky/.local/share/mise/installs/python/3.8.18/lib/python3.8/threading.py", line 932, in _bootstrap_inner
    self.run()
  File "/Users/stevenslupsky/.local/share/mise/installs/python/3.8.18/lib/python3.8/threading.py", line 870, in run
    self._target(*self._args, **self._kwargs)
  File "/Users/stevenslupsky/.local/share/mise/installs/python/3.8.18/lib/python3.8/site-packages/ws4py/websocket.py", line 528, in run
    if not self.once():
  File "/Users/stevenslupsky/.local/share/mise/installs/python/3.8.18/lib/python3.8/site-packages/ws4py/websocket.py", line 410, in once
    if not self.process(self.buf[:requested]):
  File "/Users/stevenslupsky/.local/share/mise/installs/python/3.8.18/lib/python3.8/site-packages/ws4py/websocket.py", line 465, in process
    logger.debug("Closing message received (%d): %s" % (s.closing.code, s.closing.reason.decode() if isinstance(s.closing.reason, bytes) else s.closing.reason))
TypeError: isinstance() arg 2 must be a type or tuple of types

See also: klattimer/LGWebOSRemote#172

Seems like the error might be from this line:

WebSocket-for-Python/ws4py/websocket.py

Line 410 in cb60792

if not self.process(self.buf[:requested]):

The second parameter is null.

[auvipy]

thanks, i got them in the CI as well
test_parse_unix_schemes (test.test_client.BasicClientTest) ... /home/runner/work/WebSocket-for-Python/WebSocket-for-Python/test/test_client.py:37: ResourceWarning: unclosed <socket.socket fd=3, family=AddressFamily.AF_UNIX, type=SocketKind.SOCK_STREAM, proto=0>
c = WebSocketBaseClient(url="wss+unix:///my.socket")
/opt/hostedtoolcache/Python/3.6.15/x64/lib/python3.6/unittest/case.py:605: ResourceWarning: unclosed <socket.socket fd=4, family=AddressFamily.AF_UNIX, type=SocketKind.SOCK_STREAM, proto=0>
testMethod()
ok
test_parse_ws_scheme (test.test_client.BasicClientTest) ... /opt/hostedtoolcache/Python/3.6.15/x64/lib/python3.6/unittest/case.py:605: ResourceWarning: unclosed <socket.socket fd=3, family=AddressFamily.AF_INET, type=SocketKind.SOCK_STREAM, proto=6, laddr=('0.0.0.0', 0)>
testMethod()
ok
test_parse_ws_scheme_when_missing_resource (test.test_client.BasicClientTest) ... ok
test_parse_ws_scheme_with_port (test.test_client.BasicClientTest) ... ok
test_parse_ws_scheme_with_query_string (test.test_client.BasicClientTest) ... ok
test_parse_wss_scheme (test.test_client.BasicClientTest) ... ok
test_parse_wss_scheme_when_missing_resource (test.test_client.BasicClientTest) ... ok
test_parse_wss_scheme_with_port (test.test_client.BasicClientTest) ... ok
test_parse_wss_scheme_with_query_string (test.test_client.BasicClientTest) ... ok
test_thread_is_started_once_connected (test.test_client.ThreadedClientTest) ... Exception in thread WebSocketClient:
Traceback (most recent call last):
File "/opt/hostedtoolcache/Python/3.6.15/x64/lib/python3.6/threading.py", line 916, in _bootstrap_inner
self.run()
File "/opt/hostedtoolcache/Python/3.6.15/x64/lib/python3.6/threading.py", line 864, in run
self._target(*self._args, **self._kwargs)
File "/home/runner/work/WebSocket-for-Python/WebSocket-for-Python/ws4py/websocket.py", line 528, in run
if not self.once():
File "/home/runner/work/WebSocket-for-Python/WebSocket-for-Python/ws4py/websocket.py", line 410, in once
if not self.process(self.buf[:requested]):
File "/home/runner/work/WebSocket-for-Python/WebSocket-for-Python/ws4py/websocket.py", line 465, in process
logger.debug("Closing message received (%d): %s" % (s.closing.code, s.closing.reason.decode() if isinstance(s.closing.reason, bytes) else s.closing.reason))
TypeError: isinstance() arg 2 must be a type or tuple of types

ok
test_thread_is_started_once_connected_secure (test.test_client.ThreadedClientTest)
Same as the above test, but with SSL socket ... Exception in thread WebSocketClient:
Traceback (most recent call last):
File "/opt/hostedtoolcache/Python/3.6.15/x64/lib/python3.6/threading.py", line 916, in _bootstrap_inner
self.run()
File "/opt/hostedtoolcache/Python/3.6.15/x64/lib/python3.6/threading.py", line 864, in run
self._target(*self._args, **self._kwargs)
File "/home/runner/work/WebSocket-for-Python/WebSocket-for-Python/ws4py/websocket.py", line 528, in run
if not self.once():
File "/home/runner/work/WebSocket-for-Python/WebSocket-for-Python/ws4py/websocket.py", line 410, in once
if not self.process(self.buf[:requested]):
File "/home/runner/work/WebSocket-for-Python/WebSocket-for-Python/ws4py/websocket.py", line 465, in process
logger.debug("Closing message received (%d): %s" % (s.closing.code, s.closing.reason.decode() if isinstance(s.closing.reason, bytes) else s.closing.reason))
TypeError: isinstance() arg 2 must be a type or tuple of types

[jolaf]

I wonder why bytes is not recognized as a type.

Maybe it's overridden by some local variable?

[jolaf]

The second parameter is null.

This should not cause any problems by itself.

[sslupsky]

I think the problem is that when process() is called at line 410, it makes the call without including the second parameter, namely bytes and the definition of process() does not define the default argument. So, there is no "bytes" object (it is None).

[jolaf]

The problem is process() second argument is named bytes, which is Python name for built-in type.
Of course, isinstance(anything, bytes) would fail in this situation, because bytes is not a type.

To fix this problem, the process() argument should be renamed to something more reasonable, like data.