numpy.isnan(myarray).any()
下面讨论了哪一种方法的速度最快
reference:
stackoverflow.com/questions/911871/detect-if-a-numpy-array-contains-at-least-one-non-numeric-value
python numpy 判断ndarray 中是否有 nan
原文：http://www.cnblogs.com/norsd/p/6368353.html
