cumsum()函数 [太阳]选择题 对于以下python代码表述错误的一项是? import numpy as np a = np.array([[1, 2, 3],[4, 5, 6],[7, 8, 9]]) print('a:\n',a) print('np.cumsum(a):\n',np.cumsum(a)) print('np.cumsum(a,axis=0):\n',np.cumsum(a,axis=0)) print('np.cumsum(a,...