save project

diy2.py

+i=3
+username="python"
+userpassword="666666"
+while True:
+    if i>0:
+        name=input("请输入用户名:")
+        password=input("请输入密码:")
+        i-=1
+        if name==username and password==userpassword:
+            print("登录成功!")
+            break
+        if name!=username:
+            print("用户名不存在,请重新输入")
+            continue
+        if password!=userpassword:
+            print("密码输入有误,请重新输入")
+    else:
+        print("你的账号已被锁定,请一小时后再来")
+        exit()
+print("欢迎来到贝尔编程!")
\ No newline at end of file