save project

diy2.py

-i=5
 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
 while True:
 while True:
-    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!")
-            break
-        elif name != username:
-            print("用户名不正确")
-            print("你还有"+str(i)+"次机会")
-        elif password != userpassword:
-            print("账号不正确") 
-            print("你还有"+str(i)+"次机会") 
-        else:   
-            print("用户名和密码错误!请重新输入")
-    else:
-        print("次数已用完")
+    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
+    if name!=username:
+        print("用户名错误！")
+    if password!=userpassword:
+        print("密码错误！")
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")
\ No newline at end of file