save project

diy2.py

@@ -2,17 +2,22 @@ ybc=3
 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
 while True:
 while True:
-    if ybc>3
+    if ybc>0:
         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:")
-    
+        ybc-=1
         if name == username and password == userpassword:
         if name == username and password == userpassword:
             print("登录成功")
             print("登录成功")
             break
             break
         if name != username:
         if name != username:
             print("用户账号错误")
             print("用户账号错误")
+            print("你还有"+str(ybc)+"次机会")
             continue
             continue
         if password != userpassword:
         if password != userpassword:
             print("用户密码错误")
             print("用户密码错误")
+            print("你还有"+str(ybc)+"次机会")
             continue
             continue
-print("欢迎来到贝尔编程!")
+    else:
\ No newline at end of file
+        print("次数用完")
+        exit()
+    print("欢迎来到贝尔编程!")
\ No newline at end of file