# libtmux.Server.has_session

- **Module:** libtmux
- **Package:** libtmux
- **Language:** Python
- **Kind:** method
- **Source:** https://github.com/tmux-python/libtmux/blob/38e368c11117fb4aeb2f082d552cd4f210eae06a/src/libtmux/server.py#L426
- **Page:** https://libtmux.org/en/py/stable/reference/libtmux-server-has_session/

tmux command: [`has-session`](/en/tmux/latest/manual/has-session/)

```
libtmux.Server.has_session(
    self, target_session: str, exact: bool = True
) -> bool
```

Return True if session exists.

## Parameters

- `target_session` (`str`): session name
- `exact` (`bool`): match the session name exactly. tmux uses fnmatch by default.
Internally prepends ``=`` to the session in ``$ tmux has-session``.

## Returns

bool

## Raises

- [`exc.BadSessionName`](/en/py/stable/reference/libtmux-exc-badsessionname/)

## In other ports

### Whether a session with this name exists

- TypeScript: [`server.Server.hasSession`](/en/ts/latest/reference/server-server-hassession/) (method)
- Rust: [`server.Server.has_session`](/en/rs/latest/reference/server-server-has_session/) (method)
- Go: [`tmux.Server.HasSession`](/en/go/latest/reference/tmux-server-hassession/) (method)
- Java: [`io.github.libtmux.Server.Server.hasSession`](/en/java/latest/reference/io-github-libtmux-server-server-hassession/) (method)
- C#: [`LibTmux.Server.HasSessionAsync`](/en/csharp/latest/reference/libtmux-server-hassessionasync/) (method)
- Swift: [`Server.hasSession(_:)`](/en/swift/latest/reference/server-hassession(_-)/) (method)