for循环

L = ['Adam', 'Lisa', 'Bart']for name in L:    print name

while循环

N = 10x = 0while x < N:    print x    x = x + 1

退出循环

• break退出循环

sum = 0x = 1while True:    sum = sum + x    x = x + 1    if x > 100:        breakprint sum

• continue

for x in L:    if x < 60:        continue    sum = sum + x    n = n + 1