相关代码如下：
import itertools as its
#引入迭代器的模块
words = "1234567890"
r = its.product(words, repeat=8)
dic = open("E:\pass.txt", "a")
for i in r:
dic.write("".join(i))
dic.write("".join("\n"))
dic.close()
这里是使用迭代器生成纯数字8位密码，保存为txt文件，生成后应该是953mb