def __str__(self):

        if not self.isopen:
            return "<closed File>"

        # Print all the nodes (Group and Leaf objects) on object tree
        try:
            date = time.asctime(time.localtime(os.stat(self.filename)[8]))
        except OSError:
            # in-memory file
            date = ""
        astring = self.filename + ' (File) ' + repr(self.title) + '\n'
#         astring += 'root_uep :=' + repr(self.root_uep) + '; '
#         astring += 'format_version := ' + self.format_version + '\n'
#         astring += 'filters :=' + repr(self.filters) + '\n'
        astring += 'Last modif.: ' + repr(date) + '\n'
        astring += 'Object Tree: \n'

        for group in self.walk_groups("/"):
            astring += str(group) + '\n'
            for kind in self._node_kinds[1:]:
                for node in self.list_nodes(group, kind):
                    astring += str(node) + '\n'
        return astring
Return a short string representation of the object tree.
dataset/ETHPy150Open PyTables/PyTables/tables/file.py/File.__str__