> [ (x.v.uid, x.w.uid) for x in n2.edges ]

[('1-3', '3-10'),
 ('1-3', '3-29'),
 ('1-3', '3-28'),
 ('1-3', '3-4'),
 ('1-3', '3-9'),
 ('1-3', '3-2'),
 ('1-3', '3-33'),
 ('1-3', '3-14'),
 ('1-3', '3-1'),
 ('1-3', '3-1'),
 ('1-3', '3-8'),
 ('1-3', '3-2')]

> ('1-3', '3-2') in n2.edges
True 

> n2.edges[('1-3', '3-2')]

---------------------------------------------------------------------------
IndexError                                Traceback (most recent call last)
<ipython-input-37-533ded6bd32b> in <module>
----> 1 n2.edges[('1-3', '3-2')]

c:\users\ingos\documents\workbench\pathpy3\pathpy\models\higher_order_network.py in __getitem__(self, key)
    433                 edge = self._nodes_map[_node]
    434             else:
--> 435                 edge = self._nodes_map[_node][-1]
    436 
    437         elif isinstance(key, self._edge_class) and key in self:

c:\users\ingos\documents\workbench\pathpy3\pathpy\core\edge.py in __getitem__(self, key)
    492             edge = key
    493         elif isinstance(key, (int, slice)):
--> 494             edge = list(self._map.values())[key]
    495         else:
    496             edge = self._map[key]

IndexError: list index out of range