save project

diy2.py

+i=3
 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
 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:")
-    #print("用户名和密码错误!请重新输入")
-    if username != name and userpassword == password:
-        print('用户名错误')
-            
-    if userpassword != password and username == name:
-        print('密码错误')
-        
-    if name == username and password == userpassword:
-        print("登录成功!")
-        break
+    i-=1
+    if i>0:
+        if username != name and userpassword == password:
+            print('用户名错误')
+        if userpassword != password and username == name:
+            print('密码错误')
+        if name == username and password == userpassword:
+            print("登录成功!")
+            break
+    else:
+        print('账户已锁定')
+        exit()
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")
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