code: def chebyshev(src, tar, qval=2, alphabet=None):
      r
      return Chebyshev().dist_abs(src, tar, qval, alphabet)
docs: r"""Return the Chebyshev distance between two strings.
  
      This is a wrapper for the :py:meth:`Chebyshev.dist_abs`.
  
      Parameters
      ----------
      src : str
          Source string (or QGrams/Counter objects) for comparison
      tar : str
          Target string (or QGrams/Counter objects) for comparison
      qval : int
          The length of each q-gram; 0 for non-q-gram version alphabet
      alphabet : collection or int
          The values or size of the alphabet
  
      Returns
      -------
      float
          The Chebyshev distance
  
      Examples
      --------
      >>> chebyshev('cat', 'hat')
      1.0
      >>> chebyshev('Niall', 'Neil')
      1.0
      >>> chebyshev('Colin', 'Cuilen')
      1.0
      >>> chebyshev('ATCG', 'TAGC')
      1.0
      >>> chebyshev('ATCG', 'TAGC', qval=1)
      0.0
      >>> chebyshev('ATCGATTCGGAATTTC', 'TAGCATAATCGCCG', qval=1)
      3.0