durtools.pair_multiply_constant_numerator — Abjad v1.1.1 documentation

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# durtools.pair_multiply_constant_numerator

`abjad.tools.durtools.` `pair_multiply_constant_numerator`(pair, multiplier)

  Multiply Python pair by Rational multiplier. Hold pair numerator constant, if possible. Return new Python pair representing product.

  Intended for certain types of meter multiplication.

  Examples:

  durtools.pair_multiply_constant_numerator(9, 16), Rational(2, 3)) (9, 24)

  durtools.pair_multiply_constant_numerator(9, 16), Rational(1, 2)) (9, 32)

  durtools.pair_multiply_constant_numerator(9, 16), Rational(5, 6)) (45, 96)

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