code: def do_map(func_name, *sequence):
      
  
      if len(sequence)==1:
          sequence = sequence[0]
      return map(get_func(func_name, False), sequence)
docs: Return a list of the results of applying the function to the items of
      the argument sequence(s).  
      
      Functions may be registered with ``native_tags`` 
      or can be ``builtins`` or from the ``operator`` module
      
      If more than one sequence is given, the
      function is called with an argument list consisting of the corresponding
      item of each sequence, substituting None for missing values when not all
      sequences have the same length.  If the function is None, return a list of
      the items of the sequence (or a list of tuples if more than one sequence).
  
      Syntax::
      
          {% map [function] [sequence] %}        
          {% map [function] [item1 item2 ...] %}
  
      For example::
      
          {% map sha1 hello world %}
          
      calculates::
          
          [sha1(hello), sha1(world)]