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import os,random,sys,time
while True:
father = os.fork()
if father:
time.sleep(2)
rd = 7
else:
#random.seed()
rd = random.choice([2,3,4,5])
print rd
time.sleep(2)
sys.exit(0)

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If x is omitted or None, current system time is used; current system time is also used to initialize the generator when the module is first imported.
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int main()
{
int a[] = {1,2,3,4,5};
int i;
int * p = a;
for (p = a + 4, i = 0; i < 5; i++) {
printf("%d ",p[-i]);
}

return 0;
}

......

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http://twistedmatrix.com/trac/
http://www-128.ibm.com/developerworks/cn/linux/network/l-twist/part1/index.html
http://wiki.woodpecker.org.cn/moin/PyTwisted ......

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flag = 5
while flag > 0:
#ÕâÀïÊÇÄãµÄ´úÂë
flag -= 1
#if flag == 3: break
#if flag == 3: continue
print flag
µ±È»ÄãÒ²¿ÉÒÔÔÚÊʵ ......
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