Drop tornado/twisted support

Retargeting the project towards an async-only behavior.

Future-Proofing: As asyncio is part of the Python standard library, it's likely to receive continued updates and improvements.
By aligning with asyncio, we're ensuring that this project stays relevant and can benefit from the latest advancements in Python's asynchronous capabilities.
This also aligns with community momentum which heavily shifted towards asyncio for async operations while providing simplified maintenance and reduced dependencies by dropping two major frameworks.

docs/index.rst

@@ -44,48 +44,6 @@ library from the python standard lib, including the `requests`_ library can be
 made non-blocking via monkey patching. This means the standard python-consul
 client will just work asynchronously with `gevent`_.
 
-Tornado
-~~~~~~~
-
-There is a `Tornado`_ client which makes use of `gen.coroutine`_. The API for
-this client is identical to the standard python-consul client except that you
-need to *yield* the result of each API call. This client is available in
-*consul.tornado*.
-
-.. code:: python
-
-    from tornado.ioloop import IOLoop
-    from tornado.gen import coroutine
-    from consul.base import Timeout
-    from consul.tornado import Consul
-
-
-    class Config:
-        def __init__(self, loop):
-            self.foo = None
-            loop.add_callback(self.watch)
-
-        @coroutine
-        def watch(self):
-            c = Consul()
-
-            # asynchronously poll for updates
-            index = None
-            while True:
-                try:
-                    index, data = yield c.kv.get('foo', index=index)
-                    if data is not None:
-                        self.foo = data['Value']
-                except Timeout:
-                    # gracefully handle request timeout
-                    pass
-
-    if __name__ == '__main__':
-        loop = IOLoop.instance()
-        _ = Config(loop)
-        loop.start()
-
-
 asyncio
 ~~~~~~~
 
@@ -124,11 +82,6 @@ result of each API call. This client is available in *consul.aio*.
     loop.run_until_complete(go())
 
 
-Wanted
-~~~~~~
-
-Adaptors for `Twisted`_ and a `thread pool`_ based adaptor.
-
 Tools
 -----
 
@@ -306,12 +259,9 @@ Consul.txn
 .. _requests: http://python-requests.org
 .. _Vanilla: https://github.com/cablehead/vanilla
 .. _gevent: http://www.gevent.org
-.. _Tornado: http://www.tornadoweb.org
-.. _gen.coroutine: https://tornado.readthedocs.io/en/latest/gen.html
 .. _asyncio.coroutine: https://docs.python.org/3/library/asyncio-task.html#coroutines
 .. _aiohttp: https://github.com/KeepSafe/aiohttp
 .. _asyncio: https://docs.python.org/3/library/asyncio.html
-.. _Twisted: https://twistedmatrix.com/trac/
 .. _thread pool: https://docs.python.org/2/library/threading.html
 
 .. _ianitor: https://github.com/ClearcodeHQ/ianitor

tests-requirements.txt

@@ -9,13 +9,10 @@ pytest
 pytest_asyncio
 pytest-cov
 pytest-rerunfailures
-pytest-twisted
 pytest-xdist
 ruff
 setuptools
-tornado
 tox
 treq
-twisted
 virtualenv
 wheel

tests/test_base.py

@@ -111,9 +111,9 @@ def test_node_meta(self):
         c = Consul()
         for r in _should_support_node_meta(c):
             assert r().params == []
-            assert sorted(r(node_meta={"env": "prod", "net": 1}).params) == sorted(
-                [("node-meta", "net:1"), ("node-meta", "env:prod")]
-            )
+            assert sorted(r(node_meta={"env": "prod", "net": 1}).params) == sorted([
+                ("node-meta", "net:1"), ("node-meta", "env:prod")
+            ])
 
 
 class TestMeta: