human
Complete this python program:
def deprecated(func):
assistant
#Here is the Python program you requested.

    """This is a decorator which can be used to mark functions
    as deprecated. It will result in a warning being emitted the first time
    the function is used.
    """
    import inspect
    import functools
    @functools.wraps(func)
    def new_func(*args, **kwargs):
        (file, line, caller) = inspect.stack()[1][1:4]
        caller_id = ('%s:%s:%s' % (file, line, caller))
        if (caller_id not in DEPRECATED_CALLERS):
            DEPRECATED_CALLERS.append(caller_id)
            warning = ('Call    to    deprecated    function    %s    in    %s    line    %d.Called    from    %s    line    %d    by    %s().' % (func.__name__, func.__code__.co_filename, (func.__code__.co_firstlineno + 1), file, line, caller))
            from kivy.logger import Logger
            Logger.warn(warning)
            if func.__doc__:
                Logger.warn(func.__doc__)
        return func(*args, **kwargs)
    return new_func