code: def normalize_vector(vector):
      
      v = np.divide(vector, np.linalg.norm(vector))
      return np.round(v, decimals=4)
docs: Normalize a vector.
  
      A new vector is returned, the original vector is not modified.
  
      Parameters
      ----------
      vector : np.array
          The vector to be normalized.
  
      Returns
      -------
      np.array
          The normalized vector.