# BaseException

- **ID:** `python/baseexception`
- **Domain:** python
- **Category:** exception
- **Error Code:** `BaseException`
- **Verification:** official
- **Fix Rate:** 80%

## Root Cause

The base class for all built-in exceptions. Not meant to be directly inherited by user-defined classes; use Exception instead.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| 3.x | active | — | — |