1. Reproduce issue
2. Investigate issue
3. Check logs
4. Revert to old code
5. Run tests
Revert to old code, run tests, check logs, investigate issue, reproduce issue.
### Instruction:
Identify the correct order of the following steps in debugging a Python program.

### Input:
Revert to old code, run tests, check logs, investigate issue, reproduce issue.

### Response:
