摘要:
user = ['xuan','chen'] passed = ['159','564'] s1 = ''' '1).注册新用户' '2).用户登录' '3).注销用户' '4).显示用户名' '5).修改用户信息' '6).退出系统(exit(0))' ''' while 1: print(s1) 阅读全文
摘要:
# count 推导思路 l1 = [1,2,3,5,4,1,2,3,6,4,5,88,99] l2 = list() # [元素,次数,元素,次数,..........................] for i in l1: # i 在 l1 循环 if i not in l2: # 条件 : 阅读全文