Fix black formatting in europarl_st beam_search.py

[HenryVarro666]

egs/europarl_st/SRT/lcma_srt/beam_search.py (added in #2096) fails the style_check workflow — black 22.3.0 wants to reformat it, so style_check is currently red for every PR (e.g. it's what fails on #2097, whose change is an unrelated shell script).

Reformatted with the exact versions the workflow installs (black==22.3.0, click==8.1.0); black --check and isort --check both pass on the file now. No functional change (+3/-1).

Summary by CodeRabbit

• Bug Fixes
  • Improved the error message shown when an invalid language token ID is provided during beam search.
  • Clarified that the language token ID must be an integer.

[gemini-code-assist]

Code Review

This pull request reformats a long line in egs/europarl_st/SRT/lcma_srt/beam_search.py where a TypeError is raised, breaking it into multiple lines to improve code readability. There are no review comments, and I have no feedback to provide.

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: a629cfb6-fbcc-40ec-8723-d5e53b20fa4a

📥 Commits

Reviewing files that changed from the base of the PR and between f9b40b0 and b55002e.

📒 Files selected for processing (1)

• egs/europarl_st/SRT/lcma_srt/beam_search.py

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📝 Walkthrough

Walkthrough

The pull request reformats the TypeError message raised when lang_token_id is not an integer during forced first-language beam search validation.

Changes

Beam search validation

Layer / File(s)	Summary
TypeError message formatting egs/europarl_st/SRT/lcma_srt/beam_search.py	The invalid lang_token_id validation retains its behavior and updates the exception message formatting.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Suggested reviewers: linanjie0820

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly describes the main change: reformatting the europarl_st beam_search file with Black.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[HenryVarro666]

Heads up for reviewers: the red CI here is unrelated to this PR, which is a formatting-only change to europarl_st/beam_search.py. The failures come from pre-existing environment issues on master — the shared test tree aborts during pytest collection with ModuleNotFoundError: No module named 'kaldi_native_fbank' (from test_rknn_on_cpu_simulator_ctc_streaming.py), and the rknn workflow fails for the same missing dependency. None of the failing jobs touch the file changed here. Happy to help fix the CI dependency separately if useful.

[csukuangfj]

Thank you for your contribution!