pitchtools.is_carrier — Abjad v1.1.1 documentation

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# pitchtools.is_carrier

`abjad.tools.pitchtools.` `is_carrier`(expr)

  `True` when expr is an Abjad Pitch, Note, Notehead or Chord instance, otherwise `False`.

      abjad> note = Note(0, (1, 4))
      abjad> pitchtools.is_carrier(note)
      True

      abjad> staff = Staff([ ])
      abjad> pitchtools.is_carrier(staff)
      False

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