code: def meld(*values):
      
      values = [x for x in values if x is not None]
      if not values:
          return None
  
      result = repeated(*values)
      if isrepeating(result):
          return result
  
      return getvalue(result)
docs: Return the repeated value, or the first value if there's only one.
  
      This is a convenience function, equivalent to calling
      getvalue(repeated(x)) to get x.
  
      This function skips over instances of None in values (None is not allowed
      in repeated variables).
  
      Examples:
          meld("foo", "bar") # => ListRepetition("foo", "bar")
          meld("foo", "foo") # => ListRepetition("foo", "foo")
          meld("foo", None) # => "foo"
          meld(None) # => None