save project

diy1.py

 username = "HS" # 保存在服务器数据库中的用户账号（正确的账号）
 username = "HS" # 保存在服务器数据库中的用户账号（正确的账号）
 userpassword = "070625" 
 userpassword = "070625" 
+I=0
 while True:
 while True:
-    zhanghu=input("请输入账户")
-    mima=input("请输入密码")
-    if username==zhanghu and userpassword==mima:
-        print("成功登录")
-        break
-    if username!=zhanghu:
-        print("登陆失败,账户错误")
-        continue
-    if userpassword!=mima:
-        print("登陆失败,密码错误")
+    if I<3:
+        I+=1
+        zhanghu=input("请输入账户")
+        mima=input("请输入密码")
+        if username==zhanghu and userpassword==mima:
+            print("成功登录")
+            break
+        if username!=zhanghu:
+            print("登陆失败,账户错误")
+            continue
\ No newline at end of file
+        if userpassword!=mima:
+            print("登陆失败,密码错误")
+    else:
+        print("SB")
+        exit()
+print("welcome to bear")
\ No newline at end of file