save project

diy.py

+i = 3
+username="pytuon"
+userpassword="123456"
+while True:
+    if i>0:
+        a=input("输入你的账户")
+        b=input("输入你的密码")
+        i-=1
+        if a==username and b==userpassword:
+            print("登录成功!")
+            break
+        if a !=username:
+            print("用户名不存在,重新登录！")
+            print("你还有"+str(i)+"次机会")
+            continue
+        if b !=userpassword:
+            print("密码有误，重新登录！")
+            print("你还有"+str(i)+"次机会")
+    else:
+        print("你的账户已锁定,请带人过来送死")
+        exit()
+print("欢迎来到贝尔编程！")    
+            
\ No newline at end of file