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import
os
import
time
import
webbrowser as web
import
random
count =
random.randint(20,40)
j =
0
while
j < count:
i =
0
while
i <=
5:
i =
i +
1
time.sleep(1) #浏览器暂停1秒
else:
os.system(‘killall firefox‘) #关闭浏览器
j =
j +
1
print
j,‘times closing Browser!‘
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