[BE] Enable more flake8-comprehensions checks (#94601)

I applied some flake8 fixes and enabled checking for them in the linter. I also enabled some checks for my previous comprehensions PR.

This is a follow up to #94323 where I enable the flake8 checkers for the fixes I made and fix a few more of them.

Pull Request resolved: https://github.com/pytorch/pytorch/pull/94601
Approved by: https://github.com/ezyang

.flake8

@@ -11,7 +11,7 @@ ignore =
     # these ignores are from flake8-bugbear; please fix!
     B007,B008,
     # these ignores are from flake8-comprehensions; please fix!
-    C400,C401,C402,C403,C404,C405,C407,C411,C413,C414,C415
+    C400,C401,C402,C405,C407
 per-file-ignores =
     __init__.py: F401
     torch/utils/cpp_extension.py: B950

benchmarks/dynamo/microbenchmarks/operator_inp_utils.py

@@ -181,7 +181,7 @@ class OperatorInputsMode(TorchDispatchMode):
         return out
 
     def log_to_file(self, output_filename, *, skip_non_compute_operators=True):
-        sorted_operators = sorted(list(self.func_db.keys()))
+        sorted_operators = sorted(self.func_db.keys())
         with open(output_filename, "w") as f:
             for operator in sorted_operators:
                 if skip_non_compute_operators and non_compute_operator(eval(operator)):

scripts/model_zoo/update-models-from-caffe2.py

@@ -163,7 +163,7 @@ def tensortype_to_ndarray(tensor_type):
 
 
 def generate_test_input_data(onnx_model, scale):
-    real_inputs_names = list(set([input.name for input in onnx_model.graph.input]) - set([init.name for init in onnx_model.graph.initializer]))
+    real_inputs_names = list({input.name for input in onnx_model.graph.input} - {init.name for init in onnx_model.graph.initializer})
     real_inputs = []
     for name in real_inputs_names:
         for input in onnx_model.graph.input:

test/distributed/test_c10d_nccl.py

@@ -2297,7 +2297,7 @@ class DistributedDataParallelTest(
             store=store,
         )
         seqs = ["sequence_sequence", "seq", "sequence"]
-        vocab = ["<pad>"] + sorted(set([ch for seq in seqs for ch in seq]))
+        vocab = ["<pad>"] + sorted({ch for seq in seqs for ch in seq})
         vectorized_seqs = [[vocab.index(tok) for tok in seq] for seq in seqs]
         # Set the seed to make the embedding and LSTM deterministic (even
         # across ranks since DDP broadcasts parameters from rank 0)

test/functorch/discover_coverage.py

@@ -426,7 +426,7 @@ def remove_torch(name):
 
 def get_list_of_all_tests():
     all_tests = list(tested_overridable_outplace_ops.keys())
-    return set([remove_torch(test) for test in all_tests])
+    return {remove_torch(test) for test in all_tests}
 
 
 mytest = {
@@ -459,11 +459,11 @@ def get_jvp_coverage(subset=None):
     supports_forwardad_ops_dct = {name: op_to_opinfo[fn] for name, fn in ops_dct.items()
                                   if op_to_opinfo[fn][0].supports_forward_ad}
 
-    ops = set([remove_torch(test) for test in list(ops_dct.keys())])
-    supports_autograd = set([remove_torch(test)
-                             for test in list(supports_autograd_ops_dct.keys())])
-    supports_forward_ad = set([remove_torch(test)
-                               for test in list(supports_forwardad_ops_dct.keys())])
+    ops = {remove_torch(test) for test in list(ops_dct.keys())}
+    supports_autograd = {remove_torch(test)
+                         for test in list(supports_autograd_ops_dct.keys())}
+    supports_forward_ad = {remove_torch(test)
+                           for test in list(supports_forwardad_ops_dct.keys())}
     assert supports_forward_ad.issubset(supports_autograd)
     assert supports_autograd.issubset(ops)
 

test/functorch/test_aotdispatch.py

@@ -169,12 +169,12 @@ class TestPythonKey(AOTTestCase):
             return torch.tanh(x).sum()
 
         fx_f = make_fx(grad(f))(torch.randn(5))
-        ops = set([i.target for i in fx_f.graph.nodes])
+        ops = {i.target for i in fx_f.graph.nodes}
 
         self.assertEqual(torch.ops.aten.tanh_backward in ops, True)
 
         fx_f = make_fx(grad(f), decomposition_table)(torch.randn(5))
-        ops = set([i.target for i in fx_f.graph.nodes])
+        ops = {i.target for i in fx_f.graph.nodes}
         self.assertEqual(torch.ops.aten.tanh_backward in ops, False)
 
     def test_nnc_jit(self, device):

test/functorch/test_minifier.py

@@ -18,7 +18,7 @@ class TestMinifier(TestCase):
         failing_f = make_fx(failing_f)(*inps)
 
         def has_mul(fx_g, inps):
-            return (torch.ops.aten.mul.Tensor in set([i.target for i in fx_g.graph.nodes]))
+            return (torch.ops.aten.mul.Tensor in (i.target for i in fx_g.graph.nodes))
 
         min_f, inps = minifier(failing_f, inps, has_mul)
         self.assertEqual(len(min_f.graph.nodes), 4)
@@ -74,7 +74,7 @@ class TestMinifier(TestCase):
         inps = [torch.randn(3), torch.randn(3)]
 
         def has_add(fx_g, inps):
-            return (torch.ops.aten.add.Tensor in set([i.target for i in fx_g.graph.nodes]))
+            return (torch.ops.aten.add.Tensor in (i.target for i in fx_g.graph.nodes))
 
         failing_f = make_fx(f)(*inps)
         min_f, inps = minifier(failing_f, inps, has_add)

test/functorch/xfail_suggester.py

@@ -114,7 +114,7 @@ def get_suggested_xfails(base, tests):
     tests = [test[len(base):] for test in tests if
              belongs_to_base(test, base)]
 
-    base_tests = set([remove_device_dtype(test) for test in tests])
+    base_tests = {remove_device_dtype(test) for test in tests}
     tests = set(tests)
     for base in base_tests:
         cpu_variant = base + '_cpu_float32'

test/jit/test_list_dict.py

@@ -226,7 +226,7 @@ class TestList(JitTestCase):
         self.checkScript(foo2, ())
 
         def foo3():
-            return list(list("abc"))
+            return list(list("abc"))  # noqa: C414
 
         self.checkScript(foo3, ())
         FileCheck().check_count("aten::list", 2, exactly=True).run(torch.jit.script(foo3).graph)

test/mobile/model_test/gen_test_model.py

@@ -140,7 +140,7 @@ def calcOpsCoverage(ops):
                 "_coverage": round(coverage, 2),
                 "uncovered_ops": uncovered_ops_dict,
                 "covered_ops": covered_ops_dict,
-                "all_generated_ops": sorted(list(all_generated_ops)),
+                "all_generated_ops": sorted(all_generated_ops),
             },
             f,
         )

test/onnx/onnx_test_common.py

@@ -40,7 +40,7 @@ def run_model_test(test_suite: _TestONNXRuntime, *args, **kwargs):
     if hasattr(test_suite, "check_dtype"):
         options.check_dtype = test_suite.check_dtype
 
-    names = set([f.name for f in dataclasses.fields(options)])
+    names = {f.name for f in dataclasses.fields(options)}
     keywords_to_pop = []
     for k, v in kwargs.items():
         if k in names:

test/package/test_digraph.py

@@ -116,7 +116,7 @@ class TestDiGraph(PackageTestCase):
 
         result = g.all_paths("1", "3")
         # to get rid of indeterminism
-        actual = set([i.strip("\n") for i in result.split(";")[2:-1]])
+        actual = {i.strip("\n") for i in result.split(";")[2:-1]}
         expected = {
             '"2" -> "3"',
             '"1" -> "7"',

test/quantization/eager/test_quantize_eager_ptq.py

@@ -365,10 +365,10 @@ class TestQuantizeEagerPTQStatic(QuantizationTestCase):
                 # test one line API - out of place version
                 base = AnnotatedSingleLayerLinearModel(qengine)
                 base.qconfig = qconfig
-                keys_before = set(list(base.state_dict().keys()))
+                keys_before = set(base.state_dict().keys())
                 model = quantize(base, test_only_eval_fn, [self.calib_data])
                 checkQuantized(model)
-                keys_after = set(list(base.state_dict().keys()))
+                keys_after = set(base.state_dict().keys())
                 self.assertEqual(keys_before, keys_after)  # simple check that nothing changed
 
                 # in-place version
@@ -1107,10 +1107,10 @@ class TestQuantizeEagerPTQDynamic(QuantizationTestCase):
 
             # test one line API - out of place version
             base = SingleLayerLinearDynamicModel()
-            keys_before = set(list(base.state_dict().keys()))
+            keys_before = set(base.state_dict().keys())
             model = quantize_dynamic(base, qconfig_dict)
             checkQuantized(model)
-            keys_after = set(list(base.state_dict().keys()))
+            keys_after = set(base.state_dict().keys())
             self.assertEqual(keys_before, keys_after)  # simple check that nothing changed
 
             # in-place version

test/quantization/fx/test_model_report_fx.py

@@ -900,7 +900,7 @@ class TestFxModelReportClass(QuantizationTestCase):
             model_report = ModelReport(model_prep, test_detector_set)
 
             # make sure internal valid reports matches
-            detector_name_set = set([detector.get_detector_name() for detector in test_detector_set])
+            detector_name_set = {detector.get_detector_name() for detector in test_detector_set}
             self.assertEqual(model_report.get_desired_reports_names(), detector_name_set)
 
             # now attempt with no valid reports, should raise error
@@ -1329,7 +1329,7 @@ class TestFxDetectInputWeightEqualization(QuantizationTestCase):
                 mods_to_check = set([nn.Linear, nn.Conv2d])
 
                 # get the set of all nodes in the graph their fqns
-                node_fqns = set([node.target for node in prepared_for_callibrate_model.graph.nodes])
+                node_fqns = {node.target for node in prepared_for_callibrate_model.graph.nodes}
 
                 # there should be 4 node fqns that have the observer inserted
                 correct_number_of_obs_inserted = 4

test/test_namedtuple_return_api.py

@@ -167,7 +167,7 @@ class TestNamedTupleAPI(TestCase):
                     ret3 = meth(*op.input)
                     check_namedtuple(ret3, op.names)
 
-        all_covered_operators = set([x for y in operators for x in y.operators])
+        all_covered_operators = {x for y in operators for x in y.operators}
 
         self.assertEqual(all_operators_with_namedtuple_return, all_covered_operators, textwrap.dedent('''
         The set of covered operators does not match the `all_operators_with_namedtuple_return` of

test/test_proxy_tensor.py

@@ -579,7 +579,7 @@ def forward(self, x_1):
 
 
         gm = make_fx(Emformer())(torch.randn(16, 1, 256))
-        ops = set([n.target for n in gm.graph.nodes if n.op == 'call_function'])
+        ops = {n.target for n in gm.graph.nodes if n.op == 'call_function'}
         self.assertEqual(len(ops), 2)
 
 

test/test_sparse.py

@@ -264,7 +264,7 @@ class TestSparse(TestSparseBase):
                 else:
                     value_map[idx_tup] = val.clone() if isinstance(val, torch.Tensor) else val
 
-            new_indices = sorted(list(value_map.keys()))
+            new_indices = sorted(value_map.keys())
             _new_values = [value_map[idx] for idx in new_indices]
             if t._values().ndimension() < 2:
                 new_values = t._values().new(_new_values)

torch/_dynamo/skipfiles.py

@@ -130,13 +130,11 @@ FILENAME_ALLOWLIST = {
 }
 
 # Include optimizer code for tracing
-FILENAME_ALLOWLIST |= set(
-    [
-        inspect.getfile(obj)
-        for obj in torch.optim.__dict__.values()
-        if inspect.isclass(obj)
-    ]
-)
+FILENAME_ALLOWLIST |= {
+    inspect.getfile(obj)
+    for obj in torch.optim.__dict__.values()
+    if inspect.isclass(obj)
+}
 FILENAME_ALLOWLIST |= {torch.optim._functional.__file__}
 
 if HAS_PRIMS_REFS:

torch/_dynamo/utils.py

@@ -760,7 +760,7 @@ def enum_repr(value):
 
 
 def dict_param_key_ids(value):
-    return set([id(k) for k in value.keys() if isinstance(k, torch.nn.Parameter)])
+    return {id(k) for k in value.keys() if isinstance(k, torch.nn.Parameter)}
 
 
 def dict_const_keys(value):
@@ -771,7 +771,7 @@ def dict_const_keys_repr(const_keys):
     if any(isinstance(k, enum.Enum) for k in const_keys):
         # To workaround repr(Enum) returning invalid global reference before python 3.11
         # by calling enum_repr and removing quotes to render enum in guard code.
-        const_keys_str = f"{set([enum_repr(k) if isinstance(k, enum.Enum) else repr(k) for k in const_keys])}".replace(
+        const_keys_str = f"{set(enum_repr(k) if isinstance(k, enum.Enum) else repr(k) for k in const_keys)}".replace(
             "'", ""
         )
     else:

torch/_dynamo/variables/builder.py

@@ -304,17 +304,12 @@ class VariableBuilder:
                 else:
                     return key
 
-            result = dict(
-                [
-                    (
-                        k,
-                        VariableBuilder(
-                            self.tx, GetItemSource(self.get_source(), index_source(k))
-                        )(value[k]).add_guards(guards),
-                    )
-                    for k in value.keys()
-                ]
-            )
+            result = {
+                k: VariableBuilder(
+                    self.tx, GetItemSource(self.get_source(), index_source(k))
+                )(value[k]).add_guards(guards)
+                for k in value.keys()
+            }
 
             if istype(value, collections.defaultdict):
                 result = DefaultDictVariable(

torch/_functorch/partitioners.py

@@ -393,7 +393,7 @@ def min_cut_rematerialization_partition(
             for node in joint_module.graph.nodes
             if node.op == "call_function" and hasattr(node.target, "_overloadpacket")
         )
-        ops_ignored = joint_module_ops - set([str(i) for i in recomputable_ops])
+        ops_ignored = joint_module_ops - {str(i) for i in recomputable_ops}
         print("Ops banned from rematerialization: ", ops_ignored)
         print()
 
@@ -522,8 +522,8 @@ def min_cut_rematerialization_partition(
         joint_module, saved_values, saved_sym_nodes=saved_sym_nodes, num_fwd_outputs=num_fwd_outputs)
     if AOT_PARTITIONER_DEBUG:
         print("Theoretical Activations Stored: ", sum([_size_of(i) for i in saved_values]) / 1e9)
-        fw_module_nodes = set([node.name for node in fw_module.graph.nodes if node.op == 'call_function'])
-        bw_module_nodes = set([node.name for node in bw_module.graph.nodes if node.op == 'call_function'])
+        fw_module_nodes = {node.name for node in fw_module.graph.nodes if node.op == 'call_function'}
+        bw_module_nodes = {node.name for node in bw_module.graph.nodes if node.op == 'call_function'}
         remat_nodes = fw_module_nodes & bw_module_nodes
 
         counts = defaultdict(int)

torch/_inductor/graph.py

@@ -535,9 +535,7 @@ class GraphLowering(torch.fx.Interpreter):
             writes = set(dep.name for dep in node.read_writes.writes)
 
             def is_materialized(buf):
-                buf_uses = set(
-                    [user.node for user in scheduler.name_to_node[buf].users]
-                )
+                buf_uses = {user.node for user in scheduler.name_to_node[buf].users}
                 return len(buf_uses - set(node.snodes)) > 0
 
             if isinstance(node, FusedSchedulerNode):

torch/_inductor/utils.py

@@ -344,7 +344,9 @@ def fresh_inductor_cache(cache_entries=None):
 
 def argsort(seq):
     # preserve original order for equal strides
-    return list(reversed(sorted(range(len(seq)), key=seq.__getitem__, reverse=True)))
+    getter = seq.__getitem__
+    a_r = range(len(seq))
+    return list(reversed(sorted(a_r, key=getter, reverse=True)))  # noqa: C413
 
 
 @functools.lru_cache(8)

torch/ao/quantization/fx/_model_report/model_report.py

@@ -120,7 +120,7 @@ class ModelReport:
 
         # keep the reports private so they can't be modified
         self._desired_report_detectors = desired_report_detectors
-        self._desired_detector_names = set([detector.get_detector_name() for detector in desired_report_detectors])
+        self._desired_detector_names = {detector.get_detector_name() for detector in desired_report_detectors}
 
         # keep a mapping of desired reports to observers of interest
         # this is to get the readings, and to remove them, can create a large set

torch/distributed/fsdp/_optim_utils.py

@@ -1598,7 +1598,7 @@ def _all_gather_optim_state(
     gathered_state: Dict[str, Any] = {}
 
     all_tensor_states = sorted(
-        set([n for state in object_list for n in state.tensors.keys()])
+        {n for state in object_list for n in state.tensors.keys()}
     )
     empty_ranks: Set[int] = set()
     for name in all_tensor_states:

torch/fx/_symbolic_trace.py

@@ -264,7 +264,7 @@ class Tracer(TracerBase):
             for name, value in chain(*[m.__dict__.items() for m in autowrap_modules])
             if not name.startswith("_") and callable(value)
         }
-        self._autowrap_function_ids.update(set([id(f) for f in autowrap_functions]))
+        self._autowrap_function_ids.update({id(f) for f in autowrap_functions})
 
         # Python modules to apply autowrap to at the start, in addition to
         # modules we see while tracing

torch/testing/_internal/common_utils.py

@@ -3611,8 +3611,8 @@ def random_sparse_pd_matrix(matrix_size, density=0.01, **kwargs):
     torch = kwargs.get('torch', globals()['torch'])
     dtype = kwargs.get('dtype', torch.double)
     device = kwargs.get('device', 'cpu')
-    data = dict([((i, i), float(i + 1) / matrix_size)
-                 for i in range(matrix_size)])
+    data = {(i, i): float(i + 1) / matrix_size
+            for i in range(matrix_size)}
 
 
     def multiply(data, N, i, j, cs, sn, left=True):

torchgen/gen_backend_stubs.py

@@ -377,29 +377,25 @@ def gen_dispatchkey_nativefunc_headers(
     # Convert to a set first to remove duplicate kernel names.
     # Backends are allowed to repeat kernel names; only generate the declaration once!
     # Sort for deterministic output.
-    backend_declarations = list(
-        sorted(
-            set(
-                concatMap(
-                    lambda f: dest.compute_native_function_declaration(
-                        f, backend_indices[backend_dispatch_key]
-                    ),
-                    grouped_native_functions,
-                )
+    backend_declarations = sorted(
+        set(
+            concatMap(
+                lambda f: dest.compute_native_function_declaration(
+                    f, backend_indices[backend_dispatch_key]
+                ),
+                grouped_native_functions,
             )
         )
     )
-    autograd_declarations = list(
-        sorted(
-            set(
-                concatMap(
-                    lambda f: []
-                    if autograd_dispatch_key is None
-                    else dest.compute_native_function_declaration(
-                        f, backend_indices[autograd_dispatch_key]
-                    ),
-                    grouped_native_functions,
-                )
+    autograd_declarations = sorted(
+        set(
+            concatMap(
+                lambda f: []
+                if autograd_dispatch_key is None
+                else dest.compute_native_function_declaration(
+                    f, backend_indices[autograd_dispatch_key]
+                ),
+                grouped_native_functions,
             )
         )
     )

torchgen/model.py

@@ -1058,7 +1058,7 @@ class NativeFunctionsGroup:
         for f in self.functions():
             expected_generated_fns.update(str(op) for op in f.autogen)
         expected_generated_fns_str = ", ".join(
-            str(x) for x in sorted(list(expected_generated_fns))
+            str(x) for x in sorted(expected_generated_fns)
         )
         if len(expected_generated_fns) == 0 and len(generated_fns) > 0:
             raise RuntimeError(

torchgen/selective_build/selector.py

@@ -231,7 +231,7 @@ class SelectiveBuilder:
             ret["debug_info"] = sorted(self._debug_info)
 
         ret["kernel_metadata"] = {
-            k: sorted(list(v)) for (k, v) in self.kernel_metadata.items()
+            k: sorted(v) for (k, v) in self.kernel_metadata.items()
         }
 
         ret["custom_classes"] = sorted(self.custom_classes)