save project

diy2.py

@@ -2,19 +2,21 @@ i=3
 username = "python"
 userpassword = "123456"
 while True:
-    if i>3:
+    if i>0:
         name = input("请输入用户名:")
         password = input("请输入密码:")
+        i-=1
         if name == username and password == userpassword:
             print('登录成功')
-            i-=1
             break
         if name != username:
             print('用户名错误')
-        if name != username:
+            print('你还有'+str(i)+'次登录机会')
             continue
         if password != userpassword:
             print('密码错误')
-    if i=0:
+            print('你还有'+str(i)+'次登录机会')
+    if i==0:
         print('你的账号已冻结')
+        exit()
 print("欢迎来到贝尔编程!")
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