libtmux.Client.attached_pane

Re-reads the client from list-clients, looks up its attached session's current window, and returns that window's active_pane . Returns None when no live attached session or active pane can be resolved.

This follows the attached session's current window and active pane. When a client has used select-pane -P to set its own active pane, this property returns the *session's* current active pane, not the client's per-client focus.