# Managing a workbook

### Maximum workbook size

Workbooks have a maximum size limit: the total size of all the files in a workbook cannot exceed 5GB for users on the DataLab Starter plan or 20GB for users on the DataLab Premium plan. This is a per-workbook limit, so free users could have 3 workbooks with 4 GB each, for example.

If the total size of all the files in a single workbooks exceeds the limit, you can no longer edit that workbook: through the file browser, you can remove files from the workbook filesystem to go below the limit again.

### Saving your edits

All your edits are automatically saved. If you close and re-enter the workbook at a later point in time, all your work from before is saved. You can review and restore past versions of your notebooks through [version-history](https://datalab-docs.datacamp.com/work/version-history "mention").

### Renaming a workbook

1. Click on 'File > Rename workbook' in the toolbar.
2. In the modal that appears specify the new workbook name and click "Rename Workbook".

### Changing the workbook language

You can use either **Python (version 3.8 or 3.10)** or **R (version 4.2 or 4.4)** to execute code in your notebooks. The default language of your workbook is guessed based on your previous workbook. If it can't be guessed, you will be asked to specify a language.

To change the programming language yourself, click "Environment > Session Details" and select the programming language in the dropdown.

Note that this will not automatically edit/translate any code that may already exist in notebooks (e.g. you still have to convert a `pd.read_csv()` into `readr::read_csv()` when switching the language from Python to R).

<figure><img src="https://4179539225-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MZqboFGZzD87nn7oPsm%2Fuploads%2FbnC3PJ3eetxHnvf89WPd%2Fimage.png?alt=media&#x26;token=330798af-2788-4f27-a58c-1aaded8d1d76" alt="" width="375"><figcaption><p>Open up the Session Details</p></figcaption></figure>

<figure><img src="https://4179539225-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MZqboFGZzD87nn7oPsm%2Fuploads%2FXAmDtB2FA4lDq9xRids2%2Fimage.png?alt=media&#x26;token=93720439-9b30-4fbb-ad4f-21e8b7567766" alt="" width="375"><figcaption><p>Session details dialog, where you can update the language</p></figcaption></figure>

#### Python 3.8 versus Python 3.10

Python 3.10 comes with a lot of updated pre-installed packages compared to Python 3.8, most notably Pandas 2.x instead of 1.x. For a list of breaking changes, see the [Pandas docs](https://pandas.pydata.org/docs/dev/whatsnew/v2.0.0.html#backwards-incompatible-api-changes).

### Deleting your workbook

If you wish to permanently delete your workbook click "File > Delete Workbook". Confirm the action.

**Deleting a workbook is irreversible!**