save project

diy2.py

 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
-i = 0
+i = 3
 while True:
 while True:
-    if i > 0
+    if i > 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:")
+        i -= i
         if name == username and password == userpassword:
         if name == username and password == userpassword:
-            print("登录成功!")
-            break
-        if name == username and password == userpassword:    
-        print("用户名和密码错误!请重新输入")
-        i = i + 1
+            print("登录成功!")  
+            break     
         if name != username :
         if name != username :
             print("用户名错误!请重新输入") 
             print("用户名错误!请重新输入") 
-            i = i + 1
+            print("温馨提示：您还有" + str(i) + "次登录机会")
+            continue
         if password != userpassword:
         if password != userpassword:
             print("用密码错误!请重新输入" ) 
             print("用密码错误!请重新输入" ) 
-            i = i + 1  
+            print("温馨提示：您还有" + str(i) + "次登录机会")
+            continue  
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")