docs: def list_set(seq):
      """Similar to `list(set(seq))`, but maintains the order of `seq` while eliminating duplicates
  
      In general list(set(L)) will not have the same order as the original list.
      This is a list(set(L)) function that will preserve the order of L.
  
      Arguments:
        seq (iterable): list, tuple, or other iterable to be used to produce an ordered `set()`
  
      Returns:
        iterable: A copy of `seq` but with duplicates removed, and distinct elements in the same order as in `seq`
  
      Examples:
        >>> list_set([2.7,3,2,2,2,1,1,2,3,4,3,2,42,1])
        [2.7, 3, 2, 1, 4, 42]
        >>> list_set(['Zzz','abc', ('what.', 'ever.'), 0, 0.0, 'Zzz', 0.00, 'ABC'])
        ['Zzz', 'abc', ('what.', 'ever.'), 0, 'ABC']
      """
      new_list = []
      for i in seq:
          if i not in new_list:
              new_list += [i]
      return type(seq)(new_list)