Error handling, spots for docstrings and differentiating 'message' and 'messages' variables in question_wizard.py

### Enhancements for code clarity and consistency within the Python files

## Details

1. **Error handling messages**
- SyntaxError in function, 'wrapped_callback' could use a detailed error message for better clarity
- ValueError in function input_callback could use a detailed error message for better clarity

2. **Docstrings for Python codes**
- The functions throughout the Python files could use docstrings for a better understanding of the code.

3. **Variable naming consistency in question_wizard.py**
- In the question_wizard_check function, we have both 'messages' and 'message' as variables. Ensure consistency in variable names to avoid confusion.