def yield_demo(n):
    for j in range(n):
        yield triple(j)
        print("j is:", j)
    print("end of yield_demo")


def triple(m):
    print("inside triple call", m)
    return m*3


for i in yield_demo(5):
    print("i is:", i)

## output looks like the following
# inside triple call 0
# i is: 0
# j is: 0
# inside triple call 1
# i is: 3
# j is: 1
# inside triple call 2
# i is: 6
# j is: 2
# inside triple call 3
# i is: 9
# j is: 3
# inside triple call 4
# i is: 12
# j is: 4
# end of yield_demo