python3--break与continue
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#break的用法
import random
result = random.randint(0,100)
for i in range(3):
#print('please input your number,you have 3 times:')
key = int(input('请输入你猜的数字:'))
if key == result:
print ('bingo!')
break
elif key > result:
print ('you have big number!')
else:
print('you have small number!')
import random
result = random.randint(0,100)
for i in range(3):
#print('please input your number,you have 3 times:')
key = int(input('请输入你猜的数字:'))
if key == result:
print ('bingo!')
break
elif key > result:
print ('you have big number!')
else:
print('you have small number!')
print('aho!you have used your chance')
#continue
#使用continue判断,课堂测试成绩小于60分,不计入总成绩
results = []
with open ('scores.txt',mode='r',encoding='gbk') as f1:
lines = f1.readlines()
f1.close()
#print (lines)
sum = 0
for line in lines:
data = line.split()
## print (data)
for i in data[1:]:
if int(i) < 60:
continue
else:
sum += int(i)
result = '%s:%d' %(data[0],sum)
## print (result)
results.append(result)
print(results)
with open('output.txt',mode='w+',encoding='gbk') as f2:
f2.writelines(results)
f2.close()
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