【python】用户名或手机号码 + 密码登录代码： for i in range(10000): username = input('请输入用户名或手机号码：') panduan1 = username.islower() #用户名小写判断 panduan2 = username[0] #用户名首字母判断1 panduan21 = panduan2.isalpha() #用户名首字母判断2 panduan3 = len(username) #长度判断 panduan4 = username.isdigit() #手机号纯数字判断 # 用户名判断 if (panduan1 and panduan2 and panduan3 >= 6) or (panduan3 == 11 and panduan4): break else: print('用户名或手机号格式错误，请重新输入') for i in range(10000): password = input('请输入密码：') panduan5 = len(password) #密码判断 # 密码判断 if panduan5 == 6: break else: print('密码格式错误，请重新输入') if (username == 'adminer' or username == '11111111111') and password == '123456': print('登录成功！') else: print('用户名或密码错误！')