Nuke - getKnobType()

def getKnobType(knob):
    ''' Return a string that identifies the type of knob.
        Useful to distinguish between different types
        of Array and Enumeration knobs that are
        serialized with a different knob ID in tcl.
    '''
    import re

    # Use knob.Class() and return early if Class() is not Array_Knob or Enumeration_Knob
    if knob.Class() not in ['Array_Knob', 'Enumeration_Knob']:
        return knob.Class()

    knobName = knob.fullyQualifiedName()
    knobID = nuke.knob(knobName, type = True)

    # Get dict of knobtypes
    knobIDs = dict([(v,k) for (k,v) in nuke.KnobType.__dict__.items()])

    # Also use knob.Class() if ID is not found in KnobTypes
    if not (knobID in knobIDs):
        return knob.Class()

    #return type as defined in KnobTypes, with some reformatting
    return re.sub( '(?<!^)(?=[A-Z])', '_',  knobIDs[knobID].lstrip('e'))