import numpy as np
d=np.load("npdata12.npy")
print(d)
print("\n\nG1")
g1 = d[d[:, 0] == 1][:,1]
print(g1.mean())
print(g1.shape)
# print(head(d))
M = np.array([[1,2,3], [4,5,6]])
r = M[:,[1,0,2,1]]
# print(r)