save project

diy.py

 username = 'python'
 usepassword = '123456'
+i=3
 while True:
-    name = input('请输入用户名')
-    password = input('')
\ No newline at end of file
+    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 == usepassword:
+            print('登入成功')
+            break
+        elif name != username:
+            print('用户不存在')
+        else:
+            print('用户不存在')
+    else:
+        print('请到我公司解锁')
+        exit()
+