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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 deprecate(func):
 """ A deprecation warning emmiter as a decorator. """

  @wraps(func)
  def wrapper(*args, **kwargs):
    warn("Deprecated, this will be removed in the future", DeprecationWarning)
    return func(*args, **kwargs)
  wrapper.__doc__ = "Deprecated.\n" + (wrapper.__doc__ or "")
  return wrapper