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# 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
```bash
pip install -r requirements.txt
```
### Install Gradio Dashboard Dependencies
```bash
pip install -r requirements_gradio.txt
```
### Install AI/ML Dependencies (Optional)
```bash
pip install transformers torch sentencepiece
```
### Quick Install (All Features)
```bash
pip install -r requirements.txt
pip install -r requirements_gradio.txt
```
## Testing
Run the dependency test script:
```bash
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:
```bash
pip install -r requirements_gradio.txt
```
2. Run the application:
```bash
python3 app.py
```
The application will now start successfully and show clear status messages about which features are available based on installed dependencies.
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