save project

diy2.py

-username = "python"
+i=3
+username = "python" 
 userpassword = "123456"
 userpassword = "123456"
 while True:
 while True:
-    name = input("请输入用户名:")
+    if i>0:
+        name = input("请输入用户名:")
     password = input("请输入密码:")
     password = input("请输入密码:")
+    i-=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
-    elif expression:
-        pass name != username:
+    if name != username:
         print("mzzw")
         print("mzzw")
+        print("温馨提示：您还有"str(i)+"次登录机会")
         continue
         continue
-    else password != userpassword:
+    if password != userpassword:
         print("mazw")
         print("mazw")
-print("欢迎来到贝尔编程!")
+        print("温馨提示：您还有"str(i)+"次登录机会")
\ No newline at end of file
+    exit()
+print("欢迎来到贝尔编程!")