Window.deiconify

void deiconify()

Attempt to deiconify (unminimize) window. On X11 the window manager may choose to ignore the request to deiconify. When using GTK+, use [gtk.window.Window.deiconify] instead of the #GdkWindow variant. Or better yet, you probably want to use [gtk.window.Window.presentWithTime], which raises the window, focuses it, unminimizes it, and puts it on the current desktop.