def scanCharacterSet(self, characterSet, maxChars=0):
        return self.scanPredicate(lambda ch: ch in characterSet, maxChars)
Support function that scans across a buffer till we hit
dataset/ETHPy150Open CountZer0/PipelineConstructionSet/python/maya/site-packages/pymel-1.0.3/pymel/util/scanf.py/CharacterBuffer.scanCharacterSet