def __bool__(self):
        return True
Construct list representing the surrounding of radius
dataset/ETHPy150Open RoseOu/flasky/venv/lib/python2.7/site-packages/sqlalchemy/orm/instrumentation.py/ClassManager.__bool__--crossover with--dataset/ETHPy150Open nivm/learningchess/chess/complexmove/simplemove.py/find_surround