# pandas.errors.DtypeWarning: Columns (2,5) have mixed types. Specify dtype option on import or set low_memory=False.

- **ID:** `python/pandas-dtype-warning-mixed`
- **Domain:** python
- **Category:** data_error
- **Verification:** ai_generated
- **Fix Rate:** 80%

## Root Cause

CSV column contains mixed data types; pandas infers chunk-wise dtype.

## Version Compatibility

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

## Workarounds

1. **** (95% success)
   ```
   pd.read_csv(path, dtype={'col2': str, 'col5': str})
   ```
2. **** (85% success)
   ```
   pd.read_csv(path, converters={'col2': lambda x: x.strip()})
   ```

## Dead Ends

- **** — Silences warning but keeps object dtype; downstream ops still break (70% fail)
- **** — Values may be parsed as strings, breaking numeric ops (75% fail)