save project

diy2.py

+username = "python"
+password = "123456"
+a=9999999
+while True:
+    if a >0:
+        name = input("请输入用户名:")
+        password1 = input("请输入密码:")
+        a =a-1
+        if name == username and password1 == password:
+            print("登录成功!")
+            break
+        if username != name:
+            print("该用户不存在")
+            continue
+        if password != password1:    
+            print("密码错误，请重新输入")
+    else:
+        print("你的账户已被冻结，请来到公安局解锁")
+        exit()
+print("欢迎来到编程系统")        
\ No newline at end of file