Function remove_redundant_accidentals

mingus/core/notes.py:120–142

Remove redundant sharps and flats from the given note. Examples: >>> remove_redundant_accidentals('C##b') 'C#' >>> remove_redundant_accidentals('Eb##b') 'E'

(note)

def remove_redundant_accidentals(note):
    """Remove redundant sharps and flats from the given note.

    Examples:
    >>> remove_redundant_accidentals('C##b')
    'C#'
    >>> remove_redundant_accidentals('Eb##b')
    'E'
    """
    val = 0
    for token in note[1:]:
        if token == "b":
            val -= 1
        elif token == "#":
            val += 1
    result = note[0]
    while val > 0:
        result = augment(result)
        val -= 1
    while val < 0:
        result = diminish(result)
        val += 1
    return result


def augment(note):