resemble-ai
feat: Add Complete Malayalam (ml-IN) Support with TTS Fallback & UI Localization
🚀 Summary This PR introduces comprehensive support for the Malayalam language, making the project accessible to a wider demographic. It includes full UI localization, configuration updates, and a critical enhancement to the TTS engine to handle low-resource languages effectively.
✨ Key Changes
🌍 Language Integration (ml-IN):
Added ml-IN to the global language configuration and setup files.
Implemented ml.json for full UI localization, ensuring correct rendering of the Malayalam script.
Updated the language selector UI to prominently list Malayalam.
🔧 Robust Speech-to-Text & TTS Logic:
Critical Fix: Resolved an issue where unsupported languages (like Malayalam) defaulted to the base model's native output (often resulting in Chinese/Mandarin audio).
Fallback Mechanism: Implemented a smart fallback to gTTS (Google TTS) for Malayalam inputs. This ensures that when ml-IN is selected, the output is accurate Malayalam audio instead of model hallucinations.
🧪 Testing & Verification I have personally verified the following workflows:
[x] Successfully selected 'Malayalam' from the dropdown menu.
[x] Verified UI elements are correctly translated and displayed.
[x] Tested Voice Input: Speech-to-Text correctly captures Malayalam.
[x] Tested Audio Output: The system now generates clear Malayalam audio (via fallback) instead of random noise/wrong language.
👨💻 Contributor Implementation and testing by Ahmed Shajahan.
Changes Summary
This PR introduces Malayalam language support to the Chatterbox TTS system while fixing critical compatibility issues for Google Colab environments. It adds localization, configuration updates, a gTTS fallback mechanism for Malayalam, and relaxes strict dependency version pinning to allow broader environment compatibility.
Type: feature
Components Affected: Language Support (Malayalam), TTS Engine (mtl_tts.py), ASR Engine (asr.py), UI/Demo Application (multilingual_app.py), Dependency Management (pyproject.toml), Device Compatibility (CPU/MPS/CUDA), CI/CD Workflows (GitHub Actions), Example Scripts
Files Changed
| File | Summary | Change | Impact |
|---|---|---|---|
/tmp/workspace/locales/ml_IN.json |
Added Malayalam translation file with UI strings for settings, start, language, and microphone labels. | ➕ | 🟢 |
/tmp/workspace/src/chatterbox/mtl_tts.py |
Added Malayalam to SUPPORTED_LANGUAGES config and implemented gTTS fallback mechanism for Malayalam synthesis (lines 38, 273-297). Also fixed device mapping for CPU/MPS loading (lines 165-168). | ✏️ | 🔴 |
/tmp/workspace/src/chatterbox/asr.py |
New ASR module implementing SpeechRecognizer class with Malayalam language support using Whisper pipeline. | ➕ | 🟡 |
/tmp/workspace/multilingual_app.py |
Extended Gradio UI to support Malayalam language selection with localization loading, UI label updates, and footer attribution. Added STT/ASR integration (lines 66-69, 243-282, 360-397). | ✏️ | 🟡 |
/tmp/workspace/pyproject.toml |
Relaxed strict version pinning for major dependencies (numpy, librosa, torch, torchaudio, transformers, gradio, etc.) from exact versions (==) to minimum versions (>=) for Google Colab compatibility. | ✏️ | 🔴 |
/tmp/workspace/src/chatterbox/tts_turbo.py |
Changed HuggingFace token parameter from os.getenv('HF_TOKEN') or True to os.getenv('HF_TOKEN') to make authentication optional for public models. |
✏️ | 🟡 |
/tmp/workspace/example_tts.py |
Added existence check for optional audio prompt file to prevent FileNotFoundError when using voice cloning example. | ✏️ | 🟢 |
...pace/.github/workflows/python-package-conda.yml |
Added GitHub Actions workflow for Python package testing using Conda with flake8 linting and pytest. | ➕ | 🟢 |
/tmp/workspace/COLAB_FIX_DETAILS.md |
Documentation explaining all Google Colab compatibility changes and how to install the project in Colab. | ➕ | 🟢 |
/tmp/workspace/verify_malayalam_full.py |
Test script for comprehensive Malayalam functionality verification including TTS and ASR. | ➕ | 🟢 |
/tmp/workspace/verify_ml.py |
Verification script for Malayalam language configuration and supported languages list. | ➕ | 🟢 |
/tmp/workspace/verify_stt.py |
Test script for Speech-to-Text functionality verification. | ➕ | 🟢 |
Architecture Impact
- New Patterns: Fallback mechanism (gTTS fallback for unsupported languages), Lazy loading pattern (model initialization on first use), Localization/i18n pattern (locale loading per language)
- Dependencies: added: gtts (implicit in gTTS fallback code, not in pyproject.toml - POTENTIAL ISSUE), added: soundfile (used in gTTS fallback, not listed in pyproject.toml - POTENTIAL ISSUE), added: transformers pipeline for ASR (already in dependencies), relaxed: numpy (>=1.26.0 from >=1.24.0,<1.26.0), relaxed: librosa (>=0.10.0 from ==0.11.0), relaxed: torch (>=2.0.0 from ==2.6.0), relaxed: torchaudio (>=2.0.0 from ==2.6.0), relaxed: transformers (>=4.46.0 from ==4.46.3), relaxed: gradio (>=4.0.0 from ==5.44.1), relaxed: other packages similarly
- Coupling: Added tight coupling between mtl_tts.py and gTTS library for Malayalam synthesis, creating a hard dependency on external Google TTS service for one language.
Risk Areas: Missing dependencies in pyproject.toml: The gTTS fallback code imports 'gtts', 'soundfile', and 'io'/'librosa' modules but gtts and soundfile are not listed in pyproject.toml dependencies. This will cause import errors at runtime when Malayalam is selected., Hardcoded external service dependency: Malayalam synthesis relies on Google TTS API (gTTS), which introduces an external service dependency that may change, have rate limits, or availability issues., Broad version relaxation: Changing from pinned versions (==) to minimum versions (>=) significantly increases the risk of compatibility issues with untested version combinations, especially for major packages like PyTorch., Silent fallback behavior: If gTTS fallback fails, the code prints an error and falls through to the base model which likely won't work for Malayalam (the original problem), potentially producing incorrect output without clear error handling., Optional HuggingFace token: Changing token authentication to optional may cause issues with private models or rate limiting, though this is appropriate for public models., Device mapping logic: The CPU/MPS mapping uses string comparison ('cpu', 'mps') which could be fragile if device handling changes in PyTorch.
Suggestions
- Add 'gtts' and 'soundfile' to pyproject.toml dependencies to ensure Malayalam functionality works out-of-the-box.
- Add version constraints or compatibility testing for the relaxed dependencies (especially torch, transformers) to reduce risk of unexpected breaking changes.
- Improve error handling in the gTTS fallback to raise a clear exception rather than silently falling through to the base model.
- Consider implementing a more robust language support detection mechanism that doesn't rely on external APIs for core functionality.
- Add tests to verify Malayalam TTS and ASR functionality work correctly with the current dependency versions.
- Document the gTTS dependency and potential limitations (rate limits, internet connectivity requirement) for users.
- Consider whether the broad version ranges (>=2.0.0 for torch, >=4.0.0 for gradio) could cause issues in practice and add version compatibility tests.
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Validated 101 issues: 56 kept, 45 filtered
Issues Found: 56
💬 See 40 individual line comment(s) for details.
📊 27 unique issue type(s) across 56 location(s)
📋 Full issue list (click to expand)
🟠 HIGH - Test file not discoverable by pytest workflow (4 occurrences)
Agent: testing
Category: quality
Why this matters: Without tests in CI, bugs can slip into production undetected.
📍 View all locations
| File | Description | Suggestion | Confidence |
|---|---|---|---|
verify_malayalam_full.py:1-38 |
This file contains a valid unittest.TestCase with proper test methods, but it is named verify_malaya... | Rename this file to follow pytest conventions: test_malayalam_support.py or move it to a tests/test_... | 90% |
verify_ml.py:1-35 |
This is a manual verification script that performs functional testing of Malayalam TTS but is not pa... | Convert this verification script to proper test functions or integrate it as an integration test tha... | 75% |
verify_stt.py:1-31 |
This is a manual verification script for STT functionality but is not part of the automated test sui... | Convert to proper test: Create tests/test_stt.py with test functions that match pytest discovery pat... | 75% |
.github/workflows/python-package-conda.yml:31-34 |
The workflow includes a pytest step, but pytest will discover zero tests. The project has no pytest-... | Create actual test files in pytest-discoverable locations. Rename verify files to test_*.py or move ... | 92% |
Rule: cicd_missing_test_step
🟠 HIGH - Assert statements used for validation (2 occurrences)
Agent: python
Category: quality
Why this matters: Assert is stripped with -O flag; validation silently disappears in production.
📍 View all locations
| File | Description | Suggestion | Confidence |
|---|---|---|---|
src/chatterbox/tts_turbo.py:221-264 |
Two assert statements used for input validation will be disabled with python -O flag, allowing inval... | Replace asserts with explicit if statements: (1) Line 221: if len(s3gen_ref_wav) / _sr <= 5.0: raise... | 85% |
src/chatterbox/mtl_tts.py:270 |
Assert statement used for input validation will be disabled with python -O flag. | Replace assert with explicit if statement: if self.conds is None: raise ValueError('Please prepare_c... | 85% |
Rule: python_assert_in_production
🟠 HIGH - CI/CD Pipeline Missing Security Scanning
Agent: security
Category: security
Why this matters: Security vulnerabilities can be deployed to production without automated scanning.
File: .github/workflows/python-package-conda.yml:1-34
Description: The GitHub Actions workflow lacks SAST tools, dependency vulnerability scanning, and container security scanning.
Suggestion: Add security scanning tools to the pipeline: 1) SAST: GitHub CodeQL or Semgrep for code vulnerability scanning, 2) Dependency scanning: Dependabot, Snyk, or npm audit for known vulnerabilities.
Confidence: 80%
Rule: cicd_missing_security_scan
🟠 HIGH - Multiple print statements in production code (3 occurrences)
Agent: python
Category: quality
Why this matters: Improves code quality and reliability.
📍 View all locations
| File | Description | Suggestion | Confidence |
|---|---|---|---|
multilingual_app.py:8-273 |
Print statements should be replaced with logging framework for better control over output, filtering... | Add logger = logging.getLogger(name) at the top of the file and replace all print() calls with l... | 80% |
src/chatterbox/mtl_tts.py:281-296 |
Debug print statements in generate() method should use logging framework. | Add logger = logging.getLogger(name) at module top and replace print() with logger.info() or log... | 85% |
src/chatterbox/tts_turbo.py:194 |
Print statements in tts_turbo.py should use logging framework for consistency and production compati... | Replace print() calls with logger.warning(), logger.info(), or logger.debug(). Module already has lo... | 88% |
Rule: py_replace_print_statements_with_logging_fr
🟠 HIGH - Hardcoded URLs in configuration dictionary
Agent: python
Category: quality
Why this matters: Hardcoded URLs break deployments and make testing difficult.
File: multilingual_app.py:13-110
Description: Multiple hardcoded Google Storage URLs are embedded directly in LANGUAGE_CONFIG, making configuration inflexible and harder to manage across environments.
Suggestion: Externalize URLs to environment variables, a configuration file (YAML/JSON), or a settings module. Use os.getenv() or pydantic-settings to load them at runtime.
Confidence: 70%
Rule: qual_hardcoded_urls_python
🟠 HIGH - Assert used for data validation instead of if/raise (4 occurrences)
Agent: python
Category: bug
📍 View all locations
| File | Description | Suggestion | Confidence |
|---|---|---|---|
src/chatterbox/mtl_tts.py:270 |
Assert statement used to validate runtime conditions in non-test code. Asserts can be disabled with ... | Replace with if-condition and raise RuntimeError: if self.conds is None: raise RuntimeError('Please ... | 95% |
src/chatterbox/tts_turbo.py:221 |
Assert statement validates user-provided data (audio file length). This data validation check could ... | Replace with if-condition and raise ValueError: if len(s3gen_ref_wav) / _sr <= 5.0: raise ValueError... | 95% |
multilingual_app.py:185 |
Function parameter audio_prompt_path_input has default value None but is annotated as str. Should be... | Change type annotation from 'str = None' to 'str | None = None' or 'Optional[str] = None' | 90% |
src/chatterbox/tts_turbo.py:264 |
Assert statement validates runtime state (self.conds not None). Asserts can be disabled with -O flag... | Replace with if-condition and raise RuntimeError: if self.conds is None: raise RuntimeError('Please ... | 95% |
Rule: py_don_t_use_assert_for_data_validation
🟠 HIGH - Dictionary key access without validation (2 occurrences)
Agent: bugs
Category: bug
📍 View all locations
| File | Description | Suggestion | Confidence |
|---|---|---|---|
multilingual_app.py:376-381 |
The on_language_change() function accesses dictionary keys (language, start, settings, microphone) f... | Use loc.get('language', 'Language') instead of loc['language'] to provide safe fallback values, or v... | 85% |
src/chatterbox/mtl_tts.py:175 |
Line 179 accesses t3_state['model'][0] without verifying the 'model' key exists or that it contains ... | Check structure first: if 'model' in t3_state and isinstance(t3_state['model'], (list, tuple)) and l... | 75% |
Rule: bug_array_bounds
🟠 HIGH - Mutable global variable MODEL used without thread safety
Agent: python
Category: quality
File: multilingual_app.py:11
Description: Global variable 'MODEL' is initialized as None and modified at module level (line 158) and within functions (line 147). This creates potential race conditions in async Gradio contexts and makes the module non-reentrant.
Suggestion: Either use a lazy-loading pattern with a lock for thread safety, or refactor to create models per request/session rather than globally. Consider using Gradio's session state management instead of module-level globals.
Confidence: 85%
Rule: py_avoid_using_mutable_global_variables
🟠 HIGH - Environment variable read at class method level (2 occurrences)
Agent: architecture
Category: quality
📍 View all locations
| File | Description | Suggestion | Confidence |
|---|---|---|---|
src/chatterbox/mtl_tts.py:198 |
The HF_TOKEN environment variable is read inside the from_pretrained() classmethod during model inst... | Create a centralized Settings class using pydantic_settings that loads HF_TOKEN once at startup. Pas... | 75% |
src/chatterbox/tts_turbo.py:197 |
The HF_TOKEN environment variable is read inside the from_pretrained() classmethod during model inst... | Implement a centralized Settings class that loads HF_TOKEN once at startup. Modify from_pretrained()... | 75% |
Rule: py_move_environment_configuration_to_startu
🟠 HIGH - Docstring lists incomplete supported languages
Agent: documentation
Category: docs
File: multilingual_app.py:191-210
Description: The generate_tts_audio() docstring claims support for only 7 languages, but the actual implementation supports 23 languages including Malayalam, Arabic, Japanese, Korean, and others. This significantly misleads users about the true capabilities.
Suggestion: Update the docstring to reference SUPPORTED_LANGUAGES constant or state '23+ languages' instead of the incomplete list. Include Malayalam and other newly supported languages.
Confidence: 90%
Rule: py_docstring_capability_claim_false
🟠 HIGH - Undocumented Malayalam gTTS fallback implementation
Agent: documentation
Category: docs
File: src/chatterbox/mtl_tts.py:273-298
Description: The generate() method contains special-case Malayalam handling that uses gTTS fallback (lines 273-298) but is not documented in any docstring. This is a significant implementation detail that changes behavior for Malayalam users and should be clearly documented.
Suggestion: Add a comprehensive docstring to the generate() method documenting: (1) Supported parameters, (2) That Malayalam uses gTTS fallback, (3) Exception handling behavior, (4) Return type.
Confidence: 85%
Rule: py_docstring_description_mismatch
🟠 HIGH - Bare exception handling in file operations (7 occurrences)
Agent: python
Category: bug
📍 View all locations
| File | Description | Suggestion | Confidence |
|---|---|---|---|
multilingual_app.py:272-274 |
Exception handler catches all exceptions generically when loading locale file. Should catch specific... | Catch specific exceptions: 'except (FileNotFoundError, json.JSONDecodeError, PermissionError) as e:' | 80% |
src/chatterbox/asr.py:26-57 |
Function transcribe() has parameters 'audio_path' and 'language_id' without type annotations. | Add type annotation: 'def transcribe(self, audio_path: str, language_id: str | None = None) -> str:... | 85% |
src/chatterbox/asr.py:22-24 |
Exception handler catches all exceptions generically. This masks specific errors like ImportError or... | Catch specific exceptions: 'except (RuntimeError, ImportError, OSError) as e:' | 75% |
src/chatterbox/asr.py:55-57 |
Exception handler catches all exceptions generically during transcription. Specific exceptions like ... | Catch specific exceptions: 'except (RuntimeError, FileNotFoundError, ValueError) as e:' | 75% |
src/chatterbox/tts_turbo.py:200 |
Exception handler catches all exceptions generically in norm_loudness(). Should catch specific excep... | Catch specific exceptions: 'except (ValueError, RuntimeError, AttributeError) as e:' | 70% |
multilingual_app.py:151-153 |
Exception handler catches all exceptions then re-raises. While it does re-raise, logging specific ex... | Replace 'except Exception as e:' with specific exception types for clearer error handling | 65% |
verify_ml.py:26-32 |
Exception handler catches all exceptions generically in model generation. Should catch specific exce... | Catch specific exceptions: 'except (RuntimeError, ValueError, OSError) as e:' | 80% |
Rule: py_add_specific_exception_handling
🟠 HIGH - Direct list index access without bounds check
Agent: python
Category: bug
File: src/chatterbox/mtl_tts.py:41
Description: Accessing text[0] and text[1:] without checking if text is non-empty. If text is empty string, text[0].islower() will raise IndexError.
Suggestion: Check length first: 'if text and text[0].islower():' or use defensive coding pattern
Confidence: 75%
Rule: bug_array_bounds_python
🟠 HIGH - BytesIO stream not explicitly closed in gTTS fallback
Agent: performance
Category: performance
File: src/chatterbox/mtl_tts.py:282-294
Description: BytesIO stream is created and written to but never explicitly closed. While BytesIO is memory-based, explicit cleanup is best practice for resource management.
Suggestion: Use context manager: 'with io.BytesIO() as fp:' or explicitly close after reading with fp.close()
Confidence: 75%
Rule: perf_unclosed_resources
🟠 HIGH - Missing return type annotation (3 occurrences)
Agent: python
Category: quality
📍 View all locations
| File | Description | Suggestion | Confidence |
|---|---|---|---|
src/chatterbox/asr.py:26-57 |
Method 'transcribe' lacks return type annotation. | Add '-> str:' to method signature | 90% |
multilingual_app.py:140-154 |
Function 'get_or_load_model' lacks a return type annotation. | Add return type annotation: '-> ChatterboxMultilingualTTS | None:' | 85% |
multilingual_app.py:162-169 |
Function 'set_seed' lacks return type annotation. Should specify return type. | Add '-> None:' to function signature | 75% |
Rule: python_type_hints_missing
🟡 MEDIUM - Repeated device detection logic
Agent: python
Category: quality
Why this matters: Enables traceability and forensics while keeping logs actionable.
File: verify_ml.py:8-14
Description: Device selection logic is repeated across verify_ml.py (lines 8-14), verify_stt.py (no device detection - uses default), and example_tts.py (lines 6-12). This violates DRY principle.
Suggestion: Extract to a shared utility function: 'def detect_best_device() -> str:'
Confidence: 65%
Rule: py_add_proper_logging_for_audit_and_debuggi
🟡 MEDIUM - Function set_seed() missing docstring (4 occurrences)
Agent: python
Category: docs
Why this matters: Baseline documentation improves IDE help, searchability, and onboarding.
📍 View all locations
| File | Description | Suggestion | Confidence |
|---|---|---|---|
multilingual_app.py:162-169 |
Public function 'set_seed' (line 162) has no docstring. | Add a docstring to the set_seed function documenting the seed parameter and the effect of setting se... | 0% |
src/chatterbox/asr.py:26-35 |
Function 'transcribe' has a docstring documenting Args but is missing Returns section. | Add 'Returns:' section: 'str: The transcribed text from the audio file, or an error message if trans... | 65% |
src/chatterbox/mtl_tts.py:41 |
Function 'punc_norm' has a docstring but is incomplete. It's missing Args and Returns sections. | Expand docstring to include Args (text: str) and Returns (str) sections describing input text normal... | 60% |
src/chatterbox/tts_turbo.py:29-65 |
Function 'punc_norm' has a docstring but is incomplete. It's missing Args and Returns sections. | Expand docstring to include Args (text: str) and Returns (str) sections describing text normalizatio... | 60% |
Rule: py_docstrings_required_for_public_apis_pep_
🟡 MEDIUM - Error logged without operation context (2 occurrences)
Agent: bugs
Category: bug
📍 View all locations
| File | Description | Suggestion | Confidence |
|---|---|---|---|
src/chatterbox/mtl_tts.py:295-297 |
When gTTS fallback fails, the error is logged with minimal context. The error message doesn't includ... | Include operation context: logger.error(f'gTTS fallback failed for Malayalam text generation: {e}', ... | 70% |
multilingual_app.py:272-274 |
When locale file loading fails, the error message lacks context about the file path being loaded. Th... | Include the full file path and operation context: logger.error(f'Failed to load locale file at {loca... | 65% |
Rule: bug_missing_error_context
🟡 MEDIUM - Hardcoded HuggingFace Token Usage Without Validation
Agent: security
Category: security
File: src/chatterbox/tts_turbo.py:197
Description: The from_pretrained method uses os.getenv('HF_TOKEN') without validation. The token could be None, empty, or maliciously controlled through environment injection attacks. If validation fails, users receive unclear error messages.
Suggestion: Add explicit validation: check if HF_TOKEN is set and non-empty before passing to snapshot_download. Provide clear error messages if the token is missing.
Confidence: 70%
Rule: py_add_input_validation_for_critical_parame
🟡 MEDIUM - Docstring missing Returns section
Agent: documentation
Category: docs
File: src/chatterbox/asr.py:26-32
Description: The transcribe() method docstring documents Args but omits the Returns section. The function returns a string, but this return value is not documented.
Suggestion: Add Returns section: 'Returns: str: Transcribed text from the audio, or error message if transcription fails.'
Confidence: 80%
Rule: py_docstring_returns_mismatch
🟡 MEDIUM - Docstring parameter example contradicts capability claims
Agent: documentation
Category: docs
File: multilingual_app.py:199-206
Description: The docstring example for language_id lists 'eg. en, fr, de, es, it, pt, hi' but this contradicts the claim of 23 supported languages. The example should include Malayalam (ml) since it was just added.
Suggestion: Update example to show representative set: 'eg. en, fr, de, es, it, pt, hi, ml, ar, ja, ko' or reference the SUPPORTED_LANGUAGES constant.
Confidence: 75%
Rule: py_docstring_param_mismatch
🟡 MEDIUM - Missing exception documentation in docstring (2 occurrences)
Agent: python
Category: docs
📍 View all locations
| File | Description | Suggestion | Confidence |
|---|---|---|---|
src/chatterbox/mtl_tts.py:239-333 |
Function generate() raises ValueError for unsupported language_id but has no 'Raises:' section in do... | Add 'Raises:' section documenting ValueError for unsupported language_id | 80% |
multilingual_app.py:140-154 |
Function get_or_load_model() re-raises exceptions on model load failure but 'Raises:' section is mis... | Add 'Raises:' section to docstring documenting potential exceptions from model loading | 70% |
Rule: py_document_exceptions_in_function_docstrin
🟡 MEDIUM - Hardcoded locale loading for Malayalam only (2 occurrences)
Agent: refactoring
Category: quality
📍 View all locations
| File | Description | Suggestion | Confidence |
|---|---|---|---|
multilingual_app.py:264-274 |
load_locale() function has hardcoded file path 'locales/ml_IN.json' and special-case handling for Ma... | Generalize locale loading to handle all languages uniformly with a pattern like 'locales/{lang_code}... | 75% |
multilingual_app.py:372 |
Footer message is hardcoded to display only for Malayalam language ('ml'), making the conditional ch... | Create a configuration map for language-specific footer messages in LANGUAGE_CONFIG, similar to how ... | 75% |
Rule: quality_dead_feature_flag
🟡 MEDIUM - Missing encoding specification in file operation
Agent: python
Category: quality
File: multilingual_app.py:268-274
Description: JSON file loading should explicitly specify encoding='utf-8' for consistent handling, especially important for locale files with non-ASCII characters.
Suggestion: Use: with open("locales/ml_IN.json", "r", encoding="utf-8") as f:
Confidence: 70%
Rule: py_handle_file_operations_errors
🟡 MEDIUM - Unused import (3 occurrences)
Agent: python
Category: quality
Why this matters: Reduces noise and cognitive load, prevents accidental side effects and speeds up tooling.
📍 View all locations
| File | Description | Suggestion | Confidence |
|---|---|---|---|
multilingual_app.py:244 |
Import 'Path' from pathlib is never used in the file. | Remove 'from pathlib import Path' or use it in code | 95% |
verify_ml.py:2 |
Import 'os' is never used in this verification script. | Remove 'import os' if not needed | 95% |
example_tts.py:31 |
Import 'os' at line 31 comes after code execution, should be at module top. | Move 'import os' to the top of the file with other imports | 85% |
Rule: py_remove_unused_imports_and_variables
🔵 LOW - Duplicate comment
Agent: refactoring
Category: quality
Why this matters: This pattern commonly causes runtime bugs.
File: example_tts.py:28-29
Description: Identical comment appears on consecutive lines 28-29, indicating copy-paste error or incomplete refactoring.
Suggestion: Remove one of the duplicate comments on lines 28-29.
Confidence: 100%
Rule: quality_unreachable_code
🔵 LOW - Trailing whitespace (3 occurrences)
Agent: python
Category: style
📍 View all locations
| File | Description | Suggestion | Confidence |
|---|---|---|---|
multilingual_app.py:67 |
Line ends with trailing spaces that should be removed. | Remove trailing whitespace from line | 100% |
src/chatterbox/asr.py:12-49 |
Multiple lines have trailing whitespace (lines 12, 15, 37, 42, 47, 49). | Configure editor to trim trailing whitespace on save | 85% |
src/chatterbox/mtl_tts.py:198-286 |
Multiple lines contain trailing whitespace (lines 205, 211, 258, 280, 286, 289, 293). | Use pre-commit hook or linter to auto-trim trailing whitespace | 85% |
Rule: py_remove_unnecessary_trailing_whitespace
ℹ️ 16 issue(s) outside PR diff (click to expand)
These issues were found in lines not modified in this PR.
🟠 HIGH - Assert statements used for validation
Agent: python
Category: quality
Why this matters: Assert is stripped with -O flag; validation silently disappears in production.
File: src/chatterbox/tts_turbo.py:221-264
Description: Two assert statements used for input validation will be disabled with python -O flag, allowing invalid states to proceed silently in production.
Suggestion: Replace asserts with explicit if statements: (1) Line 221: if len(s3gen_ref_wav) / _sr <= 5.0: raise ValueError('Audio prompt must be longer than 5 seconds!') (2) Line 264: if self.conds is None: raise ValueError('Please prepare_conditionals first...')
Confidence: 85%
Rule: python_assert_in_production
🟠 HIGH - Multiple print statements in production code
Agent: python
Category: quality
Why this matters: Improves code quality and reliability.
File: multilingual_app.py:8-273
Description: Print statements should be replaced with logging framework for better control over output, filtering by level, and production compatibility.
Suggestion: Add logger = logging.getLogger(name) at the top of the file and replace all print() calls with logger.debug(), logger.info(), logger.warning(), or logger.exception() depending on severity.
Confidence: 80%
Rule: py_replace_print_statements_with_logging_fr
🟠 HIGH - Hardcoded URLs in configuration dictionary
Agent: python
Category: quality
Why this matters: Hardcoded URLs break deployments and make testing difficult.
File: multilingual_app.py:13-110
Description: Multiple hardcoded Google Storage URLs are embedded directly in LANGUAGE_CONFIG, making configuration inflexible and harder to manage across environments.
Suggestion: Externalize URLs to environment variables, a configuration file (YAML/JSON), or a settings module. Use os.getenv() or pydantic-settings to load them at runtime.
Confidence: 70%
Rule: qual_hardcoded_urls_python
🟠 HIGH - Assert used for input validation instead of if/raise (3 occurrences)
Agent: python
Category: bug
📍 View all locations
| File | Description | Suggestion | Confidence |
|---|---|---|---|
src/chatterbox/tts_turbo.py:221 |
Assert statement validates user-provided data (audio file length). This data validation check could ... | Replace with if-condition and raise ValueError: if len(s3gen_ref_wav) / _sr <= 5.0: raise ValueError... | 95% |
multilingual_app.py:185 |
Function parameter audio_prompt_path_input has default value None but is annotated as str. Should be... | Change type annotation from 'str = None' to 'str | None = None' or 'Optional[str] = None' | 90% |
src/chatterbox/tts_turbo.py:264 |
Assert statement validates runtime state (self.conds not None). Asserts can be disabled with -O flag... | Replace with if-condition and raise RuntimeError: if self.conds is None: raise RuntimeError('Please ... | 95% |
Rule: py_don_t_use_assert_for_data_validation
🟠 HIGH - Mutable global variable MODEL used without thread safety
Agent: python
Category: quality
File: multilingual_app.py:11
Description: Global variable 'MODEL' is initialized as None and modified at module level (line 158) and within functions (line 147). This creates potential race conditions in async Gradio contexts and makes the module non-reentrant.
Suggestion: Either use a lazy-loading pattern with a lock for thread safety, or refactor to create models per request/session rather than globally. Consider using Gradio's session state management instead of module-level globals.
Confidence: 85%
Rule: py_avoid_using_mutable_global_variables
🟠 HIGH - Docstring lists incomplete supported languages
Agent: documentation
Category: docs
File: multilingual_app.py:191-210
Description: The generate_tts_audio() docstring claims support for only 7 languages, but the actual implementation supports 23 languages including Malayalam, Arabic, Japanese, Korean, and others. This significantly misleads users about the true capabilities.
Suggestion: Update the docstring to reference SUPPORTED_LANGUAGES constant or state '23+ languages' instead of the incomplete list. Include Malayalam and other newly supported languages.
Confidence: 90%
Rule: py_docstring_capability_claim_false
🟠 HIGH - Missing return type annotation (2 occurrences)
Agent: python
Category: quality
📍 View all locations
| File | Description | Suggestion | Confidence |
|---|---|---|---|
multilingual_app.py:140-154 |
Function 'get_or_load_model' lacks a return type annotation. | Add return type annotation: '-> ChatterboxMultilingualTTS | None:' | 85% |
multilingual_app.py:162-169 |
Function 'set_seed' lacks return type annotation. Should specify return type. | Add '-> None:' to function signature | 75% |
Rule: python_type_hints_missing
🟡 MEDIUM - Function set_seed() missing docstring (2 occurrences)
Agent: python
Category: docs
Why this matters: Baseline documentation improves IDE help, searchability, and onboarding.
📍 View all locations
| File | Description | Suggestion | Confidence |
|---|---|---|---|
multilingual_app.py:162-169 |
Public function 'set_seed' (line 162) has no docstring. | Add a docstring to the set_seed function documenting the seed parameter and the effect of setting se... | 0% |
src/chatterbox/tts_turbo.py:29-65 |
Function 'punc_norm' has a docstring but is incomplete. It's missing Args and Returns sections. | Expand docstring to include Args (text: str) and Returns (str) sections describing text normalizatio... | 60% |
Rule: py_docstrings_required_for_public_apis_pep_
🟡 MEDIUM - Docstring parameter example contradicts capability claims
Agent: documentation
Category: docs
File: multilingual_app.py:199-206
Description: The docstring example for language_id lists 'eg. en, fr, de, es, it, pt, hi' but this contradicts the claim of 23 supported languages. The example should include Malayalam (ml) since it was just added.
Suggestion: Update example to show representative set: 'eg. en, fr, de, es, it, pt, hi, ml, ar, ja, ko' or reference the SUPPORTED_LANGUAGES constant.
Confidence: 75%
Rule: py_docstring_param_mismatch
🟡 MEDIUM - Bare exception handling without specific exception type
Agent: python
Category: bug
File: multilingual_app.py:151-153
Description: Exception handler catches all exceptions then re-raises. While it does re-raise, logging specific exception types would improve diagnostics.
Suggestion: Replace 'except Exception as e:' with specific exception types for clearer error handling
Confidence: 65%
Rule: py_add_specific_exception_handling
🟡 MEDIUM - Missing exception documentation in docstring (2 occurrences)
Agent: python
Category: docs
📍 View all locations
| File | Description | Suggestion | Confidence |
|---|---|---|---|
src/chatterbox/mtl_tts.py:239-333 |
Function generate() raises ValueError for unsupported language_id but has no 'Raises:' section in do... | Add 'Raises:' section documenting ValueError for unsupported language_id | 80% |
multilingual_app.py:140-154 |
Function get_or_load_model() re-raises exceptions on model load failure but 'Raises:' section is mis... | Add 'Raises:' section to docstring documenting potential exceptions from model loading | 70% |
Rule: py_document_exceptions_in_function_docstrin
Review ID: ec513adb-1256-43cc-8cdd-d4dea717999d
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