what is going on in this program?

Question

print("what is going on in this program? ")
x=4
print(x<<2)
x=5
print(x<<2)
x=6
print(x<<2)
x=4
print(x<<4)
x=1
print(x<<4)

https://code.sololearn.com/cdn017l94vIx/?ref=app

Answer 1

https://www.sololearn.com/learn/4087/

Answer 2

<< is a binary operator : left shift.
4 << 2 = 16 because :
4 = 00100
00100 << 2 = 10000 = 16