Lint fixes #1 torchao/dtypes (#827)

* Lint fixes;

* Ruff auto-format

Author: jainapurva

ruff.toml

@@ -2,6 +2,8 @@
 # We plan to add files in chunks using the 'include' list below.
 # To add a new path: Simply add it to the 'include' list.
 # Example: To lint all files in every subfolder of 'test', add "test/**/*"
+# To exclude a file type: Simply add it to the 'include' list.
+# Example: To lint all files in every subfolder of 'test', add "test/**/*"
 include = [
     "torchao/float8/inference.py",
     "torchao/float8/float8_utils.py",
@@ -10,4 +12,9 @@ include = [
     "torchao/float8/float8_tensor.py",
     "torchao/quantization/linear_activation_weight_observer.py",
     "test/quantization/test_observer.py",
+    "torchao/dtypes/*"
+]
+
+exclude = [
+    "**/*.md"
 ]

torchao/dtypes/__init__.py

@@ -1,4 +1,5 @@
 from .nf4tensor import NF4Tensor, to_nf4
+
 # from ..prototype.dtypes.uint2 import UInt2Tensor, BitnetTensor
 from .uint4 import UInt4Tensor
 from .affine_quantized_tensor import (
@@ -21,7 +22,7 @@
 __all__ = [
     "NF4Tensor",
     "to_nf4",
-    "UInt4Tensor"
+    "UInt4Tensor",
     "AffineQuantizedTensor",
     "to_affine_quantized_intx",
     "to_affine_quantized_intx_static",