Project Euler Forum

I'm using this site to help learn a new programming language (python). Perhaps some day when I pick up a new language I will start over with another user name.

I would like to be able to filter the problem thread by people who only use a particular language, which would help me find out how other people have solved the problem in the language I'm trying to learn.

Generally, I search through all posts on all pages, but if I could narrow it down to users that use my language on 1 or 2 pages, it would save a great deal of time.

That may "save" some time, but it would also mean that you would probably miss all the best ideas.
As you have seen, a lot of techniques and algorithms are decribed in the forums without any code or reference to any particular language. And even when they are accompanied by code, that would rarely be in the language of your choice.

In any case, I believe it would be technically impossible to do so, because many people have not specified a particular "language of choice", and many others post code in language(s) other than their language of choice. So using that as filtering criterion would not work.