def __init__(self, level=NOTSET):
        Filterer.__init__(self)
        self.level = level
        self.formatter = None
        #get the module data lock, as we're updating a shared structure.
        _acquireLock()
        try:    #unlikely to raise an exception, but you never know...
            _handlers[self] = 1
            _handlerList.insert(0, self)
        finally:
            _releaseLock()
        self.createLock()
Process is:
dataset/ETHPy150Open deanhiller/databus/webapp/play1.3.x/python/Lib/logging/__init__.py/Handler.__init__--crossover with--dataset/ETHPy150Open MongoEngine/django-mongoengine/django_mongoengine/forms/widgets.py/Dictionary.value_from_datadict