Drop python 3.6 compatibility

.github/workflows/ci.yml

@@ -20,11 +20,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ["3.6", "3.7", "3.8", "3.9", "3.10", "3.11.0-alpha.2", "pypy-3.7", "pypy-3.8"]
-        # XML coverage reporting is broken for this particular configuration
-        exclude:
-          - os: windows-latest
-            python-version: pypy3
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11.0-alpha.2", "pypy-3.7", "pypy-3.8"]
     env:
       OS: ${{ matrix.os }}
       PYTHON: ${{ matrix.python-version }}

aiostream/stream/time.py

@@ -8,20 +8,6 @@
 __all__ = ["spaceout", "delay", "timeout"]
 
 
-async def wait_for(aw, timeout):
-    task = asyncio.ensure_future(aw)
-    try:
-        return await asyncio.wait_for(task, timeout)
-    finally:
-        # Python 3.6 compatibility
-        if not task.done():  # pragma: no cover
-            task.cancel()
-            try:
-                await task
-            except asyncio.CancelledError:
-                pass
-
-
 @operator(pipable=True)
 async def spaceout(source, interval):
     """Make sure the elements of an asynchronous sequence are separated
@@ -49,7 +35,7 @@ async def timeout(source, timeout):
     async with streamcontext(source) as streamer:
         while True:
             try:
-                item = await wait_for(anext(streamer), timeout)
+                item = await asyncio.wait_for(anext(streamer), timeout)
             except StopAsyncIteration:
                 break
             else:

setup.py

@@ -24,7 +24,6 @@
     classifiers=[
         "Programming Language :: Python",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",