2to3 conversion for strings
Question: I have written a small Qt-based text editor for Python code that I embed in my
application. Now I am going to switch to Python 3 and I want to help the users
of my app with converting their code. I know that `2to3` can do most of the
conversion for files. However, I need an on-the-fly conversion, without
touching the files on disk. I mean something like:

    
    
    py3_code_str = convert2to3(py2_code_str)
    

Does anybody know how it can be achieved with `2to3` or `lib2to3`?


Answer: Unfortunately, `lib2to3` doesn't have stable interface, meaning it might
change drastically.

Though, in case you don't really care about that, it might be possible (with
minor changes) to use `from lib2to3.refactor import RefactoringTool` and
continue on with its `refactor_string` method.

