# CacheError: Failed to read cache from .pytest_cache/v/cache/nodeids: [Errno 5] Input/output error

- **ID:** `python/pytest-cache-dir-corruption`
- **Domain:** python
- **Category:** data_error
- **Verification:** ai_generated
- **Fix Rate:** 80%

## Root Cause

The pytest cache directory is corrupted, often due to a previous test run being interrupted or disk issues.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| 3.8 | active | — | — |
| 3.9 | active | — | — |
| 3.10 | active | — | — |
| 3.11 | active | — | — |
| 3.12 | active | — | — |

## Workarounds

1. **** (95% success)
   ```
   Delete the .pytest_cache directory manually: `rm -rf .pytest_cache`
   ```
2. **** (90% success)
   ```
   Run pytest with --cache-clear and ensure proper disk space and permissions.
   ```

## Dead Ends

- **** — This clears the cache but does not fix the underlying disk or permission issue that caused corruption. (50% fail)
- **** — This is error-prone and may introduce further corruption if the file format is not understood. (80% fail)