def tstv(ts, tv):
    try:
        return round(float(ts) / float(tv), 4)
    except ZeroDivisionError:
        return 0
checks if there is at least one shot node
dataset/ETHPy150Open arq5x/gemini/gemini/gemini_stats.py/tstv--crossover with--dataset/ETHPy150Open eoyilmaz/anima/anima/env/mayaEnv/publish.py/check_shot_nodes