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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 enum_menu(strs, menu=None, *args, **kwargs):
 """Enumerates the given list of strings into returned menu. **Params**: - menu (Menu) - Existing menu to append. If not provided, a new menu will be created. """

    if not menu:
        menu = Menu(*args, **kwargs)
    for s in strs:
        menu.enum(s)
    return menu