save project

diy2.py

+i=5
 username = "py"
 userpassword = "456"
 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
-    else:    
-        if name != username:
-            print("用户名错误！")
-        if password != userpassword:
-            print("密码错误！")
+    i-=1
+    if i<0:
+        print("输入次数已耗尽,请明天再来*o*。")
+        exit()
+    else:
+        if name == username and password == userpassword:
+            print("登录成功!")
+            break
+        else:    
+            if name != username:
+                print("用户名错误!")
+                print("输入次数还剩"+str(i)+"次")
+            if password != userpassword:
+                print("密码错误！")
+                print("输入次数还剩"+str(i)+"次")
 print("欢迎来到贝尔编程!")
\ No newline at end of file