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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def create_toolbutton(entries, parent=None):
 """Create a toolbutton. Args: entries: List of (label, slot) tuples. Returns: `QtGui.QToolBar`. """

    btn = QtGui.QToolButton(parent)
    menu = QtGui.QMenu()
    actions = []

    for label, slot in entries:
        action = add_menu_action(menu, label, slot)
        actions.append(action)

    btn.setPopupMode(QtGui.QToolButton.MenuButtonPopup)
    btn.setDefaultAction(actions[0])
    btn.setMenu(menu)
    return btn, actions