save project

diy2.py

+username = "python"
+userpassword = "123456"
+i=3
+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:
+            print("输入的账号不存在，请重新输入！")
+            print("还剩"+str(i)+"次！")
+            continue
+        if password!=userpassword:
+            print("输入的密码不存在，请重新输入！")
+            print("还剩"+str(i)+"次！")
+        if name == username and password == userpassword:
+            print("登录成功!")
+            break
+    else:
+        print("已锁定！")
+        exit()    
+print("欢迎来到贝尔编程!")
\ No newline at end of file