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("登录成功!")
-        break
-    if username!=name:
-        print("账号错误请重新输入")
-        continue
-    if userpassword!=password:
-        print("密码错误请重新输入")
-    print("用户名和密码错误!请重新输入")
+    if i>0:
+            if name == username and password == userpassword:
+                print("登录成功!")
+                break
+            if username!=name:
+                print("账号错误请重新输入")
+                continue
+            if userpassword!=password:
+                print("密码错误请重新输入")
+            print("用户名和密码错误!请重新输入")
+        else:
+            print(账号已被锁定)
+            exit()
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")
 
 
     
     
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