docs: def omit(indices, from_, strict=False):
      """Returns a subsequence from given tuple, omitting specified indices.
  
      :param indices: Iterable of indices to exclude
      :param strict: Whether ``indices`` are required to exist in the tuple
  
      :return: Tuple without elements of specified indices
  
      :raise IndexError: If ``strict`` is True and one of ``indices``
                         is out of range.
  
      .. versionadded:: 0.0.3
      """
      from taipan.collections.sets import remove_subset
  
      ensure_iterable(indices)
      ensure_sequence(from_)
  
      if strict:
          remaining_indices = set(xrange(len(from_)))
          try:
              remove_subset(remaining_indices, indices)
          except KeyError as e:
              raise IndexError(int(str(e)))
      else:
          remaining_indices = set(xrange(len(from_))) - set(indices)
  
      return from_.__class__(from_[index] for index in remaining_indices)