def fuzzy_not(v):
    if v is None:
        return v
    else:
        return not v
Hook for protocols to send incoming data to the engine.
dataset/ETHPy150Open sympy/sympy/sympy/core/logic.py/fuzzy_not--crossover with--dataset/ETHPy150Open evennia/evennia/evennia/server/session.py/Session.data_in