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python学习8:break的用法


代码如下(for):

for ch in 'python':
if ch == 't':
break
print ('current letter:',ch)

运行结果:

=================== RESTART: C:/Users/公有制/Desktop/four.py ===================
current letter: p
current letter: y

这是python3的写法,这种写法和c语言有点相似。

代码如下(while):

n = 10
while n > 1:
print('n = ',n)
if n < 5:
break
n = n - 1

运行结果:

=================== RESTART: C:/Users/公有制/Desktop/four.py ===================
n = 10
n = 9
n = 8
n = 7
n = 6
n = 5
n = 4

 

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