def __init__(self):
""" Create singleton instance """
# Check whether we already have an instance
if ReductionSingleton.__instance is None:
# Create and remember instance
ReductionSingleton.__instance = Reducer()
# Store instance reference as the only member in the handle
self.__dict__['_ReductionSingleton__instance'] = ReductionSingleton.__instance
def clean(cls, reducer_cls=None):
if reducer_cls is None:
ReductionSingleton.__instance = Reducer()
else:
ReductionSingleton.__instance = reducer_cls()