save project

diy6.py

 username="python"
 username="python"
 userpassword="123456"
 userpassword="123456"
 while True:
 while True:
-    name = input("请输入用户名")
-    password = input("请输密码")
-    elif expression:
-        pass name == username and password == userpassword:
-        print("登陆成功")
-        break
-    elif name !=userpame:
-        print("用户名和密码错误，请重新输入")
-        continue  
+    if i>0:
+        name = input("请输入用户名")
+        password = input("请输密码")
+        i-=1
+        if expression:
+            pass 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("密码错误重新输入")
+        else:
+            print("你的账户被锁住，去一个小时候再试") 
     print("欢迎来到贝尔世界")
     print("欢迎来到贝尔世界")
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