Python exception into string

exception.py

    try:
        from lol import f
        f()
    except:
        exc_type, exc_value, exc_traceback = sys.exc_info()

        with io.StringIO() as buf:
            traceback.print_exception(exc_type, exc_value, exc_traceback, file=buf)
            print(buf.getvalue())

https://docs.python.org/3/library/traceback.html
https://stackoverflow.com/questions/1218933/can-i-redirect-the-stdout-in-python-into-some-sort-of-string-buffer