save project

diy2.py

+i = 3
 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
 while True:
 while True:
-    name =("请输入用户名:")
-    password = input("请输入密码:")
-    if name == username and password == userpassword:
-        break
-        print("登录成功!")
-    if username != name:
-       print("账号不匹配")
-    if username != password
-    continue
-       print("密码不匹配")
+    if i=0:
+        name =("请输入用户名:")
+        password = input("请输入密码:")
+        i=-1
+        if name == username and password == userpassword:
+            break
+            print("登录成功!")
+        if username != name:
+        print("账号不匹配")
+        if username != password
+        continue
+        print("密码不匹配")
+    else:
+        print("机会用完了")
+        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