save project

dd.py

+i=3
+a="GPB"
+b="2077"
+while True:
+    if i>0:
+        aa = input("用户名")
+        bb = input("密码")
+        i-=1
+        if a==aa and b==bb:
+            print("登陆成功")
+            break
+        if a != aa:
+            print("用户名称错误") 
+            continue
+        if b != bb:
+            print("密码错误")
+    else:
+        print("锁定")
+        exit()
+print("欢迎您")
\ No newline at end of file