[Lint] Format and Lint nf4 file and test

[drisspg]

Stacked PRs:

• ->[Lint] Format and Lint nf4 file and test #800
• [NF4] Freeze dataclass | prep for better pt2 support #799

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[Lint] Format and Lint nf4 file and test

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/ao/800

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✅ You can merge normally! (7 Unrelated Failures)

As of commit c053da9 with merge base 4d8cbc1 ():

FLAKY - The following jobs failed but were likely due to flakiness present on trunk:

• Run Regression Tests / test (CPU 2.2.2, linux.4xlarge, torch==2.2.2 --index-url https://download.pytorch.org/whl/cpu "nu... / linux-job (gh) (detected as infra flaky with no log or failing log classifier)
• Run Regression Tests / test (CPU 2.3, linux.4xlarge, torch==2.3.0 --index-url https://download.pytorch.org/whl/cpu, cpu) / linux-job (gh) (detected as infra flaky with no log or failing log classifier)
• Run Regression Tests / test (CPU 2.4, linux.4xlarge, torch==2.4.0 --index-url https://download.pytorch.org/whl/cpu, cpu) / linux-job (gh) (detected as infra flaky with no log or failing log classifier)
• Run Regression Tests / test (CPU Nightly (Aug 29, 2024), linux.4xlarge, --pre torch==2.5.0.dev20240829+cpu --index-url h... / linux-job (gh) (detected as infra flaky with no log or failing log classifier)
• Run Regression Tests / test (CUDA 2.2.2, linux.g5.12xlarge.nvidia.gpu, torch==2.2.2 "numpy<2" , cuda, 12.1) / linux-job (gh) (detected as infra flaky with no log or failing log classifier)
• Run Regression Tests / test (CUDA 2.3, linux.g5.12xlarge.nvidia.gpu, torch==2.3.0, cuda, 12.1) / linux-job (gh) (detected as infra flaky with no log or failing log classifier)
• Run Regression Tests / test (CUDA Nightly (Aug 29, 2024), linux.g5.12xlarge.nvidia.gpu, --pre torch==2.5.0.dev20240829+c... / linux-job (gh) (detected as infra flaky with no log or failing log classifier)

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[weifengpy]

didnt know there is a config file for linter. nice!