我刚刚写了一个代码来生成随机数并尝试将它与随机数匹配，但我不知道如何不重复 randint 值，有人可以帮助我吗？
from random import randint
import time
first_time = time.ctime()
print first_time
x = randint(1, 10000)
while x != randint(1, 10000):
ran = randint(1, 10000)
print ran
x = ran
print 'You number is: ', x
print ('You stared at: '+first_time)
print ('You finished at: '+time.ctime())
print('Finish')