save project

fiy.py

+username = "python"
+userpassword = "123456"
+i=3
+while True:
+    if i>0:
+        name = input("请输入用户名:")
+        i=i-1
+        i1=str(i)
+        if name!= username:
+            print("用户不存在")
+            print("你还有"+i1+"次机会")
+            continue
+        password = input("请输入密码:")
+        if name == username and password == userpassword:
+            print("登录成功!")
+            break
+        if password!= userpassword:
+            print("密码错误")
+            print("你还有"+i1+"次机会")
+    else:
+        print("账号已被锁定")
+        exit()
+print("欢迎来到贝尔编程!")
\ No newline at end of file