<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def filter_files(self, path):
 """ Exclude files based on blueprint and project configuration as well as hidden files. """

        excludes = r'|'.join([fnmatch.translate(x) for x in self.project.EXCLUDES]) or r'$.'
        for root, dirs, files in os.walk(path, topdown=True):
            dirs[:] = [d for d in dirs if not re.match(excludes, d)]
            dirs[:] = [os.path.join(root, d) for d in dirs]
            rel_path = os.path.relpath(root, path)

            paths = []
            for f in files:
                if rel_path == '.':
                    file_path = f
                else:
                    file_path = os.path.join(rel_path, f)
                if not re.match(excludes, file_path):
                    paths.append(f)

            files[:] = paths
            yield root, dirs, files