for a in range(10):

    print(a)

a=1

while True:

    print(a)

    if a==3:

        break

    a=a+1

a=1

while True:

    print(a)

    if a==3:

        continue

    a=a+1

a=[1,0,2]

for i in a:

    if not i:

        continue

    print(i)