save project

diy2.py

+u= "p"
+i=3
+s= "123456"
+while True:
+    if i>0:
+        n = input("请输入用户名:")
+        p= input("请输入密码:")
+        if n == u and p == s:
+            print("登录成功!")
+            break
+        if n!=u:
+            print("用户不存在,请重新输入!")
+            i=i-1
+            continue
+        if p!=s:
+            print("密码错误,请重新输入!")
+    else:
+        print("锁定")
+        exit()                    
+print("欢迎来到贝尔编程!")
\ No newline at end of file