archive/docs/DEPENDENCY_FIX_SUMMARY.md

Dependency Fix Summary

Issues Fixed

1. ✅ AttributeError: module 'utils' has no attribute 'setup_logging'

Problem: The application was crashing on startup with:

AttributeError: module 'utils' has no attribute 'setup_logging'

Root Cause:

• Python was importing the utils/ package directory instead of finding the setup_logging() function
• The utils/__init__.py file was empty and didn't expose the required functions

Solution: Updated /workspace/utils/__init__.py to:

• Import setup_logger from utils/logger.py
• Create a setup_logging() wrapper function for backward compatibility
• Dynamically import all utility functions from the standalone utils.py file
• Properly export all functions via __all__

2. ✅ Plotly Dependency Management

Problem:

• No graceful handling when plotly is not installed
• Charts would crash the application

Solution: Updated /workspace/app.py to:

• Check if plotly is available on import
• Set PLOTLY_AVAILABLE flag
• Create dummy plotly objects if not available
• Modified generate_chart() to show helpful error message when plotly is missing
• Log dependency status on startup

3. ✅ Transformers Dependency Management

Problem:

• Inconsistent handling of missing transformers library
• Warning message but no clear status

Solution:

• Enhanced logging to show transformers availability status
• Already had proper handling in ai_models.py with TRANSFORMERS_AVAILABLE flag
• Added status logging in app.py to show all dependency statuses at startup

4. ✅ Requirements Files Updated

Updated /workspace/requirements.txt:

• Added pandas
• Added comments about optional dependencies
• Clear separation between core and optional packages

Updated /workspace/requirements_gradio.txt:

• Marked plotly as REQUIRED for chart features
• Added transformers, torch, and sentencepiece for AI features
• Clear comments explaining which dependencies are optional

Dependency Status

Required Dependencies (Core API)

• ✓ fastapi
• ✓ uvicorn
• ✓ pydantic
• ✓ sqlalchemy
• ✓ httpx
• ✓ websockets
• ✓ requests
• ✓ aiohttp
• ✓ pandas

Required Dependencies (Gradio Dashboard)

• gradio (CRITICAL - app exits if not installed)
• plotly (REQUIRED for charts - graceful degradation if missing)

Optional Dependencies (AI Features)

• transformers (AI sentiment analysis - gracefully disabled if missing)
• torch (required by transformers)
• sentencepiece (required by some models)

Installation Instructions

Install Core API Dependencies

pip install -r requirements.txt

Install Gradio Dashboard Dependencies

pip install -r requirements_gradio.txt

Install AI/ML Dependencies (Optional)

pip install transformers torch sentencepiece

Quick Install (All Features)

pip install -r requirements.txt
pip install -r requirements_gradio.txt

Testing

Run the dependency test script:

python3 test_dependencies.py

This will check:

• ✓ utils.setup_logging() functionality
• ✓ All utility helper functions
• ✓ Availability of gradio, plotly, transformers
• ✓ AI models module
• ✓ app.py syntax validation

Startup Behavior

Before Fix

Traceback (most recent call last):
  File "/app/app.py", line 27, in <module>
    logger = utils.setup_logging()
AttributeError: module 'utils' has no attribute 'setup_logging'

After Fix

{"timestamp": "2025-11-16T15:47:32.594534Z", "level": "INFO", "logger": "crypto_aggregator", ...}
{"timestamp": "...", "level": "INFO", "message": "Dependency Status:"}
{"timestamp": "...", "level": "INFO", "message": "  - Gradio: ✓ Available"}
{"timestamp": "...", "level": "INFO", "message": "  - Plotly: ✓ Available"}
{"timestamp": "...", "level": "INFO", "message": "  - Transformers: ✗ Missing (AI features disabled)"}

Graceful Degradation

• No Gradio: Application exits with clear error message
• No Plotly: Charts show helpful message, dashboard continues to work
• No Transformers: AI features disabled, rest of app works normally

Files Modified

1. /workspace/utils/__init__.py - Added setup_logging() and utility function exports
2. /workspace/app.py - Added dependency checking and graceful handling
3. /workspace/requirements.txt - Added pandas and documentation
4. /workspace/requirements_gradio.txt - Added transformers and AI dependencies

Files Created

1. /workspace/test_dependencies.py - Comprehensive dependency testing script
2. /workspace/DEPENDENCY_FIX_SUMMARY.md - This documentation

Verification

All fixes have been tested and verified:

• ✓ utils.setup_logging() works correctly
• ✓ All utility functions accessible (format_number, calculate_rsi, etc.)
• ✓ App handles missing dependencies gracefully
• ✓ Requirements files updated with all dependencies
• ✓ Clear installation instructions provided
• ✓ Test script created for future validation

Next Steps

To run the application with all features:

1. Install dependencies:

   pip install -r requirements_gradio.txt
   

2. Run the application:

   python3 app.py
   

The application will now start successfully and show clear status messages about which features are available based on installed dependencies.