code: def min_branch_length(go_id1, go_id2, godag, branch_dist):
      '''
          Finds the minimum branch length between two terms in the GO DAG.
      '''
      # First get the deepest common ancestor
      goterm1 = godag[go_id1]
      goterm2 = godag[go_id2]
      if goterm1.namespace == goterm2.namespace:
          dca = deepest_common_ancestor([go_id1, go_id2], godag)
  
          # Then get the distance from the DCA to each term
          dca_depth = godag[dca].depth
          depth1 = goterm1.depth - dca_depth
          depth2 = goterm2.depth - dca_depth
  
          # Return the total distance - i.e., to the deepest common ancestor and back.
          return depth1 + depth2
  
      elif branch_dist is not None:
          return goterm1.depth + goterm2.depth + branch_disf min_branch_length(go_id1, go_id2, godag, branch_dist):
      '''
          Finds the minimum branch length between two terms in the GO DAG.
      '''
      # First get the deepest common ancestor
      goterm1 = godag[go_id1]
      goterm2 = godag[go_id2]
      if goterm1.namespace == goterm2.namespace:
          dca = deepest_common_ancestor([go_id1, go_id2], godag)
  
          # Then get the distance from the DCA to each term
          dca_depth = godag[dca].depth
          depth1 = goterm1.depth - dca_depth
          depth2 = goterm2.depth - dca_depth
  
          # Return the total distance - i.e., to the deepest common ancestor and back.
          return depth1 + depth2
  
      elif branch_dist is not None:
          return goterm1.depth + goterm2.depth + branch_dist
docs: Finds the minimum branch length between two terms in the GO DAG.