def is_uninteresting_source_name(self, filename):
        """These files are always ignored when sources are built into
        artifacts.
        """
        fn = filename.lower()
        if fn in SPECIAL_ARTIFACTS:
            return False
        return filename[:1] in '._' or IGNORED_FILES in fn
dataset/ETHPy150Open lektor/lektor-archive/lektor/environment.py/Environment.is_uninteresting_source_name/swapped operands of `in`