save project

diy1.py

+i=3
 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
-name=input("请输入用户名")
-password=input("请输出密码")
-if name==username and password==userpassword:
+while True:
+    if i>0:
+        name=input("请输入用户名")
+        password=input("请输出密码")
+        i-=1
+        if name==username and password==userpassword:
             print("登录成功")
             print("登录成功")
+            break
+        if name!=username:
+            print("用户名错误，请重新输入")
+            continue
+        if password!=userpassword:
+            print("密码错误，请重新输入")
+    else:
+        print("以锁定")        
+    print("欢迎来到贝尔编程")
+
+