While

count = 0
while count < 5:
    print(count)
    count += 1

####################################################################
count = 0
while True:
    if count >= 5:
        break

    if count == 2:
        count += 1
        continue

    print(count)  #
    count += 1

# 0, 1, 3, 4
####################################################################
count = 0
while count < 5:
    print(count)
    count += 1
else:
    print('done')  # while 안에서 break 에 걸리지 않고 모두 실행되면 else 를 실행하고 종료하라

# 0, 1, 2, 3, 4 done