import numpy as np
ary = [
[0,1,2,3,4,5],
[10,11,12,13,14,15],
[20,21,22,23,24,25],
[30,31,32,33,34,35],
[40,41,42,43,44,45],
[50,51,52,53,54,55]]
ary = np.array(ary)
mask = np.array([1,0,1,0,0,1], dtype=bool)
print(mask)
print(ary[mask, 2])
aW1wb3J0IG51bXB5IGFzIG5wCgphcnkgPSBbCglbMCwxLDIsMyw0LDVdLAoJWzEwLDExLDEyLDEzLDE0LDE1XSwKCVsyMCwyMSwyMiwyMywyNCwyNV0sCglbMzAsMzEsMzIsMzMsMzQsMzVdLAoJWzQwLDQxLDQyLDQzLDQ0LDQ1XSwKCVs1MCw1MSw1Miw1Myw1NCw1NV1dCmFyeSA9IG5wLmFycmF5KGFyeSkKbWFzayA9IG5wLmFycmF5KFsxLDAsMSwwLDAsMV0sIGR0eXBlPWJvb2wpCnByaW50KG1hc2spCnByaW50KGFyeVttYXNrLCAyXSkK