break continue

break将退出整个循环

l=[3,4,5,6,7,8]

for i in l:

　　if i ==5:

　　　　break

　　print(i)

3

4

continue将退出当前循环

l=[3,4,5,6,7,8]

for i in l:

　　if i ==5:

　　　　continue

　　print(i)

3

4

6

7

8

另：内外循环变量不能一样