这是我的代码，错误在标题上请帮助
import numpy as np
np.random.seed(3163233361)
secret = '3kdovjdkejazzke8ygth3mdovjokelameks83hnhiknovedkejamzksg31chBkdovjdkejaozksn3gcy3edovjdkejamzkc83gch'
secret = str(secret)
for i in range(21):
index = np.random.randint(100)
print(secret[index],end='')