some fixes from ruff:

Author: ritvikrao

auto_test.py

@@ -40,7 +40,6 @@ def searchForPython(python_implementations):
 default_num_processes = int(os.environ.get("CHARM4PY_TEST_NUM_PROCESSES", 4))
 
 try:
-    import numba
 
     numbaInstalled = True
 except:

charm4py/chare.py

@@ -1,5 +1,4 @@
 from . import wait
-from charm4py import ray
 import sys
 from greenlet import getcurrent
 from collections import defaultdict

charm4py/charm.py

@@ -22,15 +22,14 @@
 import traceback
 from . import chare
 from .chare import MAINCHARE, GROUP, ARRAY, CHARM_TYPES
-from .chare import CONTRIBUTOR_TYPE_GROUP, CONTRIBUTOR_TYPE_ARRAY
+from .chare import CONTRIBUTOR_TYPE_ARRAY
 from .chare import Chare, Mainchare, Group, ArrayMap, Array
 from . import entry_method
 from . import threads
 from .threads import Future, LocalFuture, LocalMultiFuture
 from . import reduction
 from . import wait
 from charm4py.c_object_store import MessageBuffer
-from . import ray
 import array
 
 try:

charm4py/entry_method.py

@@ -49,7 +49,7 @@ def _run(self, obj, header, args, ret_fut=False):
                 fut = args[-1]
                 args = args[:-1]
             ret = getattr(obj, self.name)(*args)
-            if ret_fut and not (ret is None):
+            if ret_fut and ret is not None:
                 fut.create_object(ret)
         except SystemExit:
             exit_code = sys.exc_info()[1].code

charm4py/interactive.py

@@ -40,7 +40,6 @@ def __init__(self, args):
 
         try:
             import readline
-            import rlcompleter
 
             readline.parse_and_bind("tab: complete")
         except:

charm4py/object_store.py

@@ -1,12 +1,6 @@
 from charm4py import (
     charm,
     Chare,
-    Group,
-    Array,
-    Future,
-    coro,
-    Channel,
-    Reducer,
     register,
 )
 from charm4py.c_object_store import CObjectStore

charm4py/pool.py

@@ -1,4 +1,4 @@
-from . import charm, Chare, Group, Array, coro_ext, threads, Future, register, ray
+from . import charm, Chare, Array, coro_ext, threads, Future, register
 from .charm import Charm4PyError
 from .threads import NotThreadedError
 from collections import defaultdict

charm4py/ray/api.py

@@ -1,5 +1,4 @@
 import types
-from copy import deepcopy
 
 counter = 0
 
@@ -36,7 +35,7 @@ def remote(self, *args, **kwargs):
 
 class RayProxy(object):
     def __init__(self, subclass, args, pe):
-        from charm4py import Chare, register, charm
+        from charm4py import Chare
 
         self.proxy = Chare(subclass, args=args, onPE=pe)
         for f in dir(self.proxy):
@@ -80,7 +79,7 @@ def task(*args):
 
 
 def remote(*args, **kwargs):
-    from charm4py import charm, Chare, register
+    from charm4py import Chare, register
 
     num_returns = kwargs.pop("num_returns", 1)
     if len(args) == 1 and len(kwargs) == 0:
@@ -123,7 +122,6 @@ def wait(futs, num_returns=1, timeout=None, fetch_local=True):
 
 
 def put(obj):
-    from ..threads import Future
     from ..charm import charm
 
     fut = charm.threadMgr.createFuture(store=True)

charm4py/threads.py

@@ -149,7 +149,7 @@ def is_local(self):
             raise ValueError(
                 "Operation not supported for future not" " stored in the object store"
             )
-        return not (self.lookup_object() is None)
+        return self.lookup_object() is not None
 
     def create_object(self, obj):
         from .charm import charm

docs/conf.py

@@ -13,8 +13,6 @@
 # All configuration values have a default; values that are commented out
 # serve to show the default.
 
-import sys
-import os
 
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the