Beside vanity address search,
can I create a valid address (without private key and public key) with a specific string?
I want to put everlasting address into blockchain by moving there some dust.
I mean python 3 here and maybe some brute-force method?
You don't have to brute force anything, since you only build a valid (burn) address, no key.
I've used a tool like that in the past, but I've accessed it as an online page where you wrote like "1Whatever" and it was creating an address starting with this.
Maybe searching the net for creating a burn address for bitcoin would give you results.
Or maybe you can check out what I've found via web search and I didn't check (I'm not familiar with python):
*
https://gist.github.com/dancodery/e26890a60cd676ca8ca3af8c247d0bb8*
https://gist.github.com/spaceexpanse/b9b7ab1f88b85cc5b3e1509ec1c7441e