def tree(self, sha):
        """Get a tree.

        :param str sha: (required), sha of the object for this tree
        :returns: :class:`Tree <github3.git.Tree>`
        """
        json = None
        if sha:
            url = self._build_url('git', 'trees', sha, base_url=self._api)
            json = self._json(self._get(url), 200)
        return Tree(json, self) if json else None
def tree ( self , sha ) : json = None if sha : url = self . _build_url ( 'git' , 'trees' , sha , base_url = self . _api ) json = self . _json ( self . _get ( url ) , 200 ) return Tree ( json , self ) if json else None
Get a tree.

        :param str sha: (required), sha of the object for this tree
        :returns: :class:`Tree <github3.git.Tree>`