'''
reshape函数使用
'''
x = np.arange(16).reshape(4,4)
print x
x = x.reshape(-1,16)
print x

[[ 0  1  2  3]
 [ 4  5  6  7]
 [ 8  9 10 11]
 [12 13 14 15]]
[[  0.   1.   2.   3.   4.   5.   6.   7.   8.   9.  10.  11.  12.  13.
   14.  15.]]