A password is considered strong if below conditions are all met: It has at least 6 characters and at most 20 characters. It must contain at least one lowercase letter, at least one uppercase letter, and at least one digit. It must NOT contain three r
import itertools as its words = 'abcdefghijklmnopqrstuvwxyz1234567890' r = its.product(words, repeat=4) # repeat 要生成多少位的字典 dic = open("pass.txt", "a") for i in r: dic.write("".join(i)) dic.write("".join("\r&quo