def __repr__(self):
return "<STR_LIT>".format(sorted(self._fnames.keys()))<EOL>
Return a string with the expression needed to re-create the object.

For example:

    >>> import pexdoc.exh, pexdoc.pinspect, sys
    >>> obj1 = pexdoc.pinspect.Callables(
    ...     [sys.modules['pexdoc.exh'].__file__]
    ... )
    >>> repr(obj1)  #doctest: +ELLIPSIS
    "pexdoc.pinspect.Callables(['...exh.py'])"
    >>> exec("obj2="+repr(obj1))
    >>> obj1 == obj2
    True