def files(self, ftype=None):
a = [self.join(i) for i in self]<EOL>if ftype is not None:<EOL><INDENT>return [i for i in a if i.isfile() and i.filetype() == ftype]<EOL><DEDENT>return [i for i in a if i.isfile()]<EOL>
return a first of path to all files within that folder