auto save

diy2.py

+username = "python"
+userpassword = "123456"
+i=3
+while True:
+    name = input("请输入用户名:")
+    password = input("请输入密码:")
+    i=i-1
+    print("温馨提示：您还剩"+str(i)+"次登录机会！")
+    if i==0:
+        print(" 你的账户已被锁定，请带身份证来我司解锁")
+        break
+    if name == username and password == userpassword:
+        print("登录成功!")
+        print("欢迎来到贝尔编程!")
+        break
+    if name!=username:
+        print("用户名错误，请重新输入！")
+        continue
+    if password!=userpassword:
+        print("密码错误，请重新输入！")
+
+    
+