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:")
-    password = input("请输入密码:")
-    if name == username and password == userpassword:
-        print("登录成功!"）
-        break
-     if name !=username:
-     print: ("错误")   
-     coun
-     if password !=userpassword:
-     print: ("错误")   
+    if i>0:
+            name = input("请输入用户名:")
+            password = input("请输入密码:")
+            i=i-1
+            if name == username and password == userpassword:
+                print("登录成功!"）
+                break
+            if name !=username:
+            print: ("错误")   
+            coun
+            if password !=userpassword:
+            print: ("错误")   
     print("用户名和密码错误!请重新输入")
     print("用户名和密码错误!请重新输入")
+    else:
+        print("")
+        exit()
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")
\ No newline at end of file