save project

diy2.py

+i=3
+username = "1"
+userpassword = ""
+while True:
+    if i>0:
+        i-=1
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        if name == username and password == userpassword:
+            print("登录成功!")
+            break
+        if name!=username:
+            print("用户名输入错误!")
+            continue
+        if password!=userpassword:
+            print("密码输入错误!")
+    exit()
+    print("停止输入")
+print("欢迎来到贝尔编程!")
\ No newline at end of file