code: def vector_mean(*args):
      
      sz = len(args)
      mean_vector = [0.0 for _ in range(len(args[0]))]
      for input_vector in args:
          mean_vector = [a+b for a, b in zip(mean_vector, input_vector)]
      mean_vector = [a / sz for a in mean_vector]
      return mean_vector
docs: Computes the mean (average) of a list of vectors.
  
      The function computes the arithmetic mean of a list of vectors, which are also organized as a list of
      integers or floating point numbers.
  
      .. code-block:: python
          :linenos:
  
          # Import geomdl.utilities module
          from geomdl import utilities
  
          # Create a list of vectors as an example
          vector_list = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
  
          # Compute mean vector
          mean_vector = utilities.vector_mean(*vector_list)
  
          # Alternative usage example (same as above):
          mean_vector = utilities.vector_mean([1, 2, 3], [4, 5, 6], [7, 8, 9])
  
      :param args: list of vectors
      :type args: list, tuple
      :return: mean vector
      :rtype: list