立即学习:https://edu.csdn.net/course/play/25878/316059?utm_source=blogtoedu
fromfile:
a1=np.arange(6).reshape(2,3)
print(a1)
with open('test.data','w') as if:
a=np.fromfile(f,dtype=int)
print(a,reshape(2,3))
with open('test.data') as if:
a=np.fromfile(f,dtype=int)
print(a.reshape(2,3))
