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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 calendar(text="", day=None, month=None, title="", width=DEFAULT_WIDTH, height=DEFAULT_HEIGHT, timeout=None):
 """ Display a calendar :param text: text inside the window :type text: str :param day: default day :type day: int :param month: default month :type month: int :param text: text inside the window :type text: str :param title: title of the window :type title: str :param width: window width :type width: int :param height: window height :type height: int :param timeout: close the window after n seconds :type timeout: int :return: (year, month, day) :rtype: tuple """

    dialog = ZCalendar(text, day, month,
                       title, width, height, timeout)
    dialog.run()
    return dialog.response