# tmuxp.workspace.builder.WorkspaceBuilderProtocol.session_exists

- **Module:** tmuxp.workspace.builder
- **Package:** tmuxp
- **Language:** Python
- **Kind:** method
- **Source:** https://github.com/tmux-python/tmuxp/blob/153acdf6ff1268b14d3d03ed488f545a7123c8f1/src/tmuxp/workspace/builder/protocol.py#L102
- **Page:** https://libtmux.org/en/py/stable/workspace/reference/tmuxp-workspace-builder-workspacebuilderprotocol-session_exists/

```
tmuxp.workspace.builder.WorkspaceBuilderProtocol.session_exists(
    self, session_name: str
) -> bool
```

Return ``True`` if a session with [`session_name`](/en/tmux/latest/catalog/formats/session_name/) already exists.

## Parameters

- `session_name` (`str`)