为了提升CPU计算速度的。若你有支持cuda的GPU，则可以忽略这个问题，因为安装SSE4.1, SSE4.2, AVX, AVX2, FMA, 仅仅提升CPU的运算速度（大概有3倍）
解决办法：
import os
os.environ[‘TF_CPP_MIN_LOG_LEVEL‘] = ‘2‘tensorflow输出提示Your CPU supports instructions that this TensorFlow binary was not compiled to use: AV
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