# AttributeError: 'DataFrame' object has no attribute 'append'

- **ID:** `python/pandas-attribute-error-append`
- **Domain:** python
- **Category:** module_error
- **Verification:** ai_generated
- **Fix Rate:** 80%

## Root Cause

DataFrame.append was removed in pandas 2.0.

## Version Compatibility

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

## Workarounds

1. **** (95% success)
   ```
   pd.concat([df1, df2], ignore_index=True)
   ```
2. **** (90% success)
   ```
   Collect rows in a list and build once: pd.DataFrame(rows)
   ```

## Dead Ends

- **** — Breaks other dependencies; no long-term fix (70% fail)
- **** — Method truly removed (90% fail)