<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def pathname(self):
 """Sluggified path for filenames Slugs to a filename using the follow steps * Decode unicode to approximate ascii * Remove existing hypens * Substitute hyphens for non-word characters * Break up the string as paths """

        slug = self.name
        slug = unidecode.unidecode(slug)
        slug = slug.replace("-", "")
        slug = re.sub(r"[^\w\.]+", "-", slug).strip("-")
        return os.path.join(*slug.split("."))