python代码random函数应用

如下：

import numpy as np

# n = int(input('请输入一个整数：'))
with open('input.txt','r') as f:
    n = int(f.readline())
    f.close()
s = []
while True:
    for i in range(n):
        r = np.random.randint(1000,1000+20*n)
        s.append(r)
    if len(s) == len(set(s)):
        break
s.sort(reverse=True)
print(s)
f1=open("output.txt","w")
for i in s:
    f1.write(str(i)+'\n')
f1.close()