MyCode19940318的博客

#用于array对象>>> a=mat([[1,2,3],[4,5,6]])>>> a.flatten()matrix([[1, 2, 3, 4, 5, 6]]) #多了一个框>>> a.flatten().A#用于array对象array([[1, 2, 3, 4, 5, 6]])b=array([[1,2,3],[4,5,6]])>>> b.flatten()arra

mat；.A；nonzero；zeros

numpy.mean(a, axis=None, dtype=None, out=None, skipna=False, keepdims=False)#数组：>>> a = array([[1, 2], [3, 4]])>>> mean(a)#所有元素平均2.5>>> mean(a, axis=0)#纵轴array([ 2., 3.])>>> mean(a, axis=1)#横