Fix RUF052 errors

arraycontext/container/__init__.py

@@ -309,7 +309,8 @@ def _deserialize_ndarray_container(  # type: ignore[misc]
 
     result = type(template)(template.shape, dtype=object)
     for i, subary in serialized:
-        result[i] = subary
+        # FIXME: numpy annotations don't seem to handle object arrays very well
+        result[i] = subary  # type: ignore[call-overload]
 
     return result
 

arraycontext/container/traversal.py

@@ -110,16 +110,16 @@ def _map_array_container_impl(
         specific container classes. By default, the recursion is stopped when
         a non-:class:`ArrayContainer` class is encountered.
     """
-    def rec(_ary: ArrayOrContainer) -> ArrayOrContainer:
-        if type(_ary) is leaf_cls:  # type(ary) is never None
-            return f(_ary)
+    def rec(ary_: ArrayOrContainer) -> ArrayOrContainer:
+        if type(ary_) is leaf_cls:  # type(ary) is never None
+            return f(ary_)
 
         try:
-            iterable = serialize_container(_ary)
+            iterable = serialize_container(ary_)
         except NotAnArrayContainerError:
-            return f(_ary)
+            return f(ary_)
         else:
-            return deserialize_container(_ary, [
+            return deserialize_container(ary_, [
                 (key, frec(subary)) for key, subary in iterable
                 ])
 
@@ -144,28 +144,28 @@ def _multimap_array_container_impl(
 
     # {{{ recursive traversal
 
-    def rec(*_args: Any) -> Any:
-        template_ary = _args[container_indices[0]]
+    def rec(*args_: Any) -> Any:
+        template_ary = args_[container_indices[0]]
         if type(template_ary) is leaf_cls:
-            return f(*_args)
+            return f(*args_)
 
         try:
             iterable_template = serialize_container(template_ary)
         except NotAnArrayContainerError:
-            return f(*_args)
+            return f(*args_)
         else:
             pass
 
         assert all(
-                type(_args[i]) is type(template_ary) for i in container_indices[1:]
+                type(args_[i]) is type(template_ary) for i in container_indices[1:]
                 ), f"expected type '{type(template_ary).__name__}'"
 
         result = []
-        new_args = list(_args)
+        new_args = list(args_)
 
         for subarys in zip(
                 iterable_template,
-                *[serialize_container(_args[i]) for i in container_indices[1:]],
+                *[serialize_container(args_[i]) for i in container_indices[1:]],
                 strict=True
                 ):
             key = None
@@ -415,13 +415,13 @@ def rec_keyed_map_array_container(
     """
 
     def rec(keys: tuple[SerializationKey, ...],
-            _ary: ArrayOrContainerT) -> ArrayOrContainerT:
+            ary_: ArrayOrContainerT) -> ArrayOrContainerT:
         try:
-            iterable = serialize_container(_ary)
+            iterable = serialize_container(ary_)
         except NotAnArrayContainerError:
-            return cast(ArrayOrContainerT, f(keys, cast(ArrayT, _ary)))
+            return cast(ArrayOrContainerT, f(keys, cast(ArrayT, ary_)))
         else:
-            return deserialize_container(_ary, [
+            return deserialize_container(ary_, [
                 (key, rec((*keys, key), subary)) for key, subary in iterable
                 ])
 
@@ -522,14 +522,14 @@ def rec_map_reduce_array_container(
 
         or any other such traversal.
     """
-    def rec(_ary: ArrayOrContainerT) -> ArrayOrContainerT:
-        if type(_ary) is leaf_class:
-            return map_func(_ary)
+    def rec(ary_: ArrayOrContainerT) -> ArrayOrContainerT:
+        if type(ary_) is leaf_class:
+            return map_func(ary_)
         else:
             try:
-                iterable = serialize_container(_ary)
+                iterable = serialize_container(ary_)
             except NotAnArrayContainerError:
-                return map_func(_ary)
+                return map_func(ary_)
             else:
                 return reduce_func([
                     rec(subary) for _, subary in iterable

arraycontext/loopy.py

@@ -83,12 +83,14 @@ def get_default_entrypoint(t_unit):
 def _get_scalar_func_loopy_program(actx, c_name, nargs, naxes):
     @memoize_in(actx, _get_scalar_func_loopy_program)
     def get(c_name, nargs, naxes):
-        from pymbolic import var
+        from pymbolic.primitives import Subscript, Variable
 
         var_names = [f"i{i}" for i in range(naxes)]
         size_names = [f"n{i}" for i in range(naxes)]
-        subscript = tuple(var(vname) for vname in var_names)
+        subscript = tuple(Variable(vname) for vname in var_names)
+
         from islpy import make_zero_and_vars
+
         v = make_zero_and_vars(var_names, params=size_names)
         domain = v[0].domain()
         for vname, sname in zip(var_names, size_names, strict=True):
@@ -98,22 +100,22 @@ def get(c_name, nargs, naxes):
 
         import loopy as lp
 
-        from .loopy import make_loopy_program
         from arraycontext.transform_metadata import ElementwiseMapKernelTag
+
+        def sub(name: str) -> Variable | Subscript:
+            return Subscript(Variable(name), subscript) if subscript else Variable(name)
+
         return make_loopy_program(
-                [domain_bset],
-                [
+                [domain_bset], [
                     lp.Assignment(
-                        var("out")[subscript],
-                        var(c_name)(*[
-                            var(f"inp{i}")[subscript] for i in range(nargs)]))
-                    ],
-                [
-                    lp.GlobalArg("out",
-                                 dtype=None, shape=lp.auto, offset=lp.auto)] + [
-                        lp.GlobalArg(f"inp{i}",
-                                     dtype=None, shape=lp.auto, offset=lp.auto)
-                        for i in range(nargs)] + [...],
+                        sub("out"),
+                        Variable(c_name)(*[sub(f"inp{i}") for i in range(nargs)]))
+                ], [
+                    lp.GlobalArg("out", dtype=None, shape=lp.auto, offset=lp.auto)
+                ] + [
+                    lp.GlobalArg(f"inp{i}", dtype=None, shape=lp.auto, offset=lp.auto)
+                    for i in range(nargs)
+                ] + [...],
                 name=f"actx_special_{c_name}",
                 tags=(ElementwiseMapKernelTag(),))
 

test/test_arraycontext.py

@@ -263,11 +263,11 @@ def test_array_context_np_workalike(actx_factory, sym_name, n_args, dtype):
             "atan2": "arctan2",
             }
 
-    def evaluate(_np, *_args):
-        func = getattr(_np, sym_name,
-                getattr(_np, c_to_numpy_arc_functions.get(sym_name, sym_name)))
+    def evaluate(np_, *args_):
+        func = getattr(np_, sym_name,
+                getattr(np_, c_to_numpy_arc_functions.get(sym_name, sym_name)))
 
-        return func(*_args)
+        return func(*args_)
 
     assert_close_to_numpy_in_containers(actx, evaluate, args)