re expect file structure
{file}.{date}.log
fact file structure
{file}.log.{date}
fix
to delete:
dfn = self.rotation_filename(self.baseFilename + "." +
time.strftime(self.suffix, timeTuple))
to insert:
dfn = self.rotation_filename(self.baseFilename[:-4] + "." +
time.strftime(self.suffix , timeTuple)+ self.baseFilename[-4:])