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# xonsh.lib.itertools

xonsh.lib.itertools.as_iterable(iterable_or_scalar)

  Utility for converting an object to an iterable. Parameters ———- iterable_or_scalar : anything

  Returns:
    l iterable

      If obj was None, return the empty tuple. If obj was not iterable returns a 1-tuple containing obj. Otherwise return obj

  Notes

  Although string types are iterable in Python, we are treating them as not iterable in this method. Thus, as_iterable(string) returns (string, )

  Examples

      >>> as_iterable(1)
      (1,)
      >>> as_iterable([1, 2, 3])
      [1, 2, 3]
      >>> as_iterable("my string")
      ("my string", )

xonsh.lib.itertools.unique_everseen(iterable, key=None)

  Yield unique elements, preserving order. Remember all elements ever seen.

  `` unique_everseen('AAAABBBCCDAABBB') → A B C D unique_everseen('ABBcCAD', str.casefold) → A B c D ``

  Source code: https://docs.python.org/3/library/itertools.html#itertools-recipes