# format_installed_age_suffix

> **Function** in `deepagents_code`

📖 [View in docs](https://reference.langchain.com/python/deepagents-code/update_check/format_installed_age_suffix)

Return `" (N days old)"` for installed versions at least a week old.

## Signature

```python
format_installed_age_suffix(
    version: str | None,
) -> str
```

---

[View source on GitHub](https://github.com/langchain-ai/deepagents/blob/a98f0dfa8d534d8a1885b524632400e52db22ac6/libs/code/deepagents_code/update_check.py#L447)