save project

diy2.py

 username="python"
 username="python"
 userpassword="123456"
 userpassword="123456"
+i=3
 while True:
 while True:
     name=input("请输入用户名")
     name=input("请输入用户名")
     password=input("请输入密码")
     password=input("请输入密码")
-    if name == username and password == userpassword:
-        print("登陆成功")
-        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")    
-print("欢迎来到贝尔编程")
+    if i>0:
+        if name == username and password == userpassword:
+            print("登陆成功")
+            break
+        if name != username:
+            print("用户名错误!请重新输入")
+            i=i-1
+            continue
+        if password != userpassword:
\ No newline at end of file
+            print("密码错误!请重新输入")
+            i=i-1
+    else:
+        print("账户已永久锁定")
+        exit()
+print("欢迎来到贝尔编程")