def __init__(self, message=None):
        if message is not None:
            self.message = message
Used in weblab.admin.monitor to check the status of current users
dataset/ETHPy150Open samuraisam/django-json-rpc/jsonrpc/exceptions.py/Error.__init__--crossover with--dataset/ETHPy150Open weblabdeusto/weblabdeusto/server/src/weblab/core/reservation_processor.py/ReservationProcessor.update_latest_timestamp