parameters: (self, ids_fac_from, ids_fac_to)
return_statement: return np.sqrt(np.sum((self.centroids[ids_fac_to]-self.centroids[ids_fac_from])**2))
docstring: Returns centroid to centroid distance from facilities in vector
          ids_fac_from to facilities in vector ids_fac_to.
docstring_summary: Returns centroid to centroid distance from facilities in vector
          ids_fac_from to facilities in vector ids_fac_to.
docstring_tokens: Returns centroid to centroid distance from facilities in vector ids_fac_from to facilities in vector ids_fac_to .
function: def get_dists(self, ids_fac_from, ids_fac_to):
          """
          Returns centroid to centroid distance from facilities in vector
          ids_fac_from to facilities in vector ids_fac_to.
          """
  
          return np.sqrt(np.sum((self.centroids[ids_fac_to]-self.centroids[ids_fac_from])**2))
function_tokens: def get_dists ( self , ids_fac_from , ids_fac_to ) : return np . sqrt ( np . sum ( ( self . centroids [ ids_fac_to ] - self . centroids [ ids_fac_from ] ) ** 2 ) )