code: def move_back(columns=1, file=sys.stdout):
      
      move.back(columns).write(file=file)
docs: Move the cursor back a number of columns.
  
          Esc[<columns>D:
          Moves the cursor back by the specified number of columns without
          changing lines. If the cursor is already in the leftmost column,
          ANSI.SYS ignores this sequence.