Clean up old Python versions and unused imports (#126)

README.rst

@@ -198,7 +198,7 @@ of these are in the ``asynq.tools`` module. These tools include:
 Compatibility
 -------------
 
-``asynq`` runs on Python 3.6 and newer.
+``asynq`` runs on Python 3.8 and newer.
 
 Previous versions of ``asynq`` used the name ``async`` for the ``@asynq()`` decorator and the
 ``.asynq`` attribute. Because ``async`` is a keyword in recent versions of Python 3, we now use

asynq/async_task.pyi

@@ -3,8 +3,6 @@ from typing import Any, Callable, Iterable, List, Mapping, TypeVar
 
 from . import futures
 
-import asynq
-
 _T = TypeVar("_T")
 
 class AsyncTaskCancelledError(GeneratorExit): ...

asynq/contexts.pyi

@@ -1,7 +1,6 @@
 from abc import abstractmethod
 from typing import Type, Optional, TypeVar
 from types import TracebackType
-import asynq
 
 _T = TypeVar("_T", bound=AsyncContext)
 

asynq/futures.pyi

@@ -1,13 +1,5 @@
-import traceback
 from typing import Callable, Generic, NoReturn, Optional, TypeVar
 
-import qcore.helpers as core_helpers
-import qcore.events as core_events
-import qcore.errors as core_errors
-
-from . import debug
-from . import _debug
-
 _T = TypeVar("_T")
 
 class FutureIsAlreadyComputed(Exception): ...

asynq/generator.pyi

@@ -1,10 +1,8 @@
 import qcore
-import functools
 from typing import Any, Callable, Generic, List, TypeVar
 
 from .decorators import asynq, async_proxy
 from .futures import FutureBase
-from .utils import result
 
 END_OF_GENERATOR: qcore.MarkerObject
 

asynq/scheduler.pyi

@@ -2,7 +2,6 @@ import threading
 from typing import Any, Optional
 
 from . import futures
-from .async_task import AsyncTask
 
 class AsyncTaskError(Exception): ...
 

asynq/scoped_value.pyi

@@ -1,4 +1,3 @@
-import qcore
 from typing import Any, Generic, TypeVar
 
 from . import contexts

asynq/tools.pyi

@@ -1,5 +1,5 @@
 from .contexts import AsyncContext
-from asynq import asynq, async_proxy
+from asynq import asynq
 
 from qcore import Utime
 from qcore.events import EventHook
@@ -52,6 +52,7 @@ def asift(
 ) -> Tuple[List[_T], List[_T]]: ...
 
 # Used to implement decorators that just wrap a function without changing the signature.
+
 class _AsyncWrapper:
     def __call__(self, fn: _T) -> _T: ...
 

pyproject.toml

@@ -1,5 +1,5 @@
 [tool.black]
-target_version = ['py37', 'py38', 'py39', 'py310', 'py311']
+target_version = ['py38', 'py39', 'py310', 'py311']
 include = '\.pyi?$'
 skip-magic-trailing-comma = true
 preview = true